Category: Patents

Process for Forming Porous Filter Media

Posted on by legna880

Disclosed is a filter element from removing contaminants from water comprised of first filter media particles having a first particle size and second media particles having a second particle size and methods for making such a filter element. The first media particles are adhered to surfaces of the second media particles. A binder connects the second media particles with one another so that interstitial spaces are formed between second media particles. A portion of the smaller first filter media particles are positioned within the interstitial spaces. According to one embodiment of the disclosure water flows through the filter element at a flux greater than about 1.5 ml/min/cm.sup.2 has a pressure drop less than 20 psi

Link via USPTO

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=3&f=G&l=50&co1=AND&d=PG01&s1=%22LOMBARDO+Andrew%22.IN.&OS=IN/%22LOMBARDO+Andrew%22&RS=IN/%22LOMBARDO+Andrew%22

 

Google Patents PDF:

https://patentimages.storage.googleapis.com/16/2b/b7/70a2f45a27af2b/US20200407239A1.pdf

Filter and Filter Media for Removing Organic Acid from Water

Posted on by legna880

Disclosed is a filter media for removing contaminants such as organic acids from water. The filter media comprises porous particles. The particles have a total pore volume greater than about 0.4 cc/g. The pore volume is primarily or substantially comprised of epipores, that is, pores that are larger than about 5 nm. The filter media may also include a non-porous filter material and a binder. The filter media may be formed into a filter element, with the binder joining particles of the filter media together into a solid body. The percentage of the total pore volume provided by epipores is greater than about 40%. The filter reduces an initial concentration of an organic acid by greater than 80% at a flux greater than 0.76 ml/min/cm.sup.2.

Link via USPTO

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=2&f=G&l=50&co1=AND&d=PG01&s1=%22LOMBARDO+Andrew%22.IN.&OS=IN/%22LOMBARDO+Andrew%22&RS=IN/%22LOMBARDO+Andrew%22

Google Patents PDF:

https://patentimages.storage.googleapis.com/95/97/f0/1e3684d48db53a/US20200407240A1.pdf

Porous Filter Media

Posted on by legna880

 

Disclosed is a filter element from removing contaminants from water comprised of first filter media particles having a first particle size and second media particles having a second particle size and methods for making such a filter element. The first media particles are adhered to surfaces of the second media particles. A binder connects the second media particles with one another so that interstitial spaces are formed between second media particles. A portion of the smaller first filter media particles are positioned within the interstitial spaces. According to one embodiment of the disclosure water flows through the filter element at a flux greater than about 1.5 ml/min/cm.sup.2 has a pressure drop less than 20 psi.

Link via USPTO:

http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PG01&s1=%22LOMBARDO+Andrew%22.IN.&OS=IN/%22LOMBARDO+Andrew%22&RS=IN/%22LOMBARDO+Andrew%22

Google Patents PDF:

https://patentimages.storage.googleapis.com/1d/39/82/9c70ced5cbdf81/US20210171359A1.pdf

Electrostatic removal… Continuation in Part

Posted on by legna880

Abstract

Electrostatic removal of colloidal, soluble and insoluble materials from a fluid- Continuation in Part

 

A filter that contains an adsorbent to remove the soluble portion of the contaminant, and then some form of electrostatic attraction additive. The electrostatic attraction additive would serve to pull the colloidal and particulate portion of the contaminant out of fluid, which could be held indefinitely, or be used to hold while the contaminant is allowed to solubilize and then be removed by the adsorbent. The electrostatic attraction additive could either be positively or negatively charged depending on the surface charge of the particulates that are in the fluid, and includes particles or fibers charged with charged polymers, zeolites, cation or anion exchange resin, powdered alumina, or nano-alumina.

Link via Google Patents:
https://patentimages.storage.googleapis.com/8c/2e/d4/54c84fb23f9747/US20190344289A1.pdf

 

Electrostatic removal of colloidal, soluble, and insoluble materials from a fluid

Posted on by legna880

US Patent Number: 10,376,900

ABSTRACT
A filter that contains an adsorbent to remove the soluble portion of the contaminant, and then some form of electrostatic attraction additive. The electrostatic attraction additive would serve to pull the colloidal and particulate portion of the contaminant out of fluid, which could be held indefinitely, or be used to hold while the contaminant is allowed to solubilize and then be removed by the adsorbent. The electrostatic attraction additive could either be positively or negatively charged depending on the surface charge of the particulates that are in the fluid, and includes particles or fibers charged with charged polymers, zeolites, cation or anion exchange resin, powdered alumina, or nano-alumina.

 

Link via USPTO

Carafe filter with air lock prevention feature (continuation)

Posted on by legna880

US Patent Number: US 10,335,717

Abstract

A filter for gravity-fed applications, having filter media with a hollow center, the filter being generally prone to a degradation or cessation in fluid flow due to air entrapment or air lock within the filter housing cavity, which develops during filtering. A diffuser element is introduced to pierce the entrapped air bubble, the diffuser element being an elongated structure connected to the filter housing top end cap and extending through the entrapped air bubble to the filter media.

Link via USPTO: https://bit.ly/2G6G8Hr

 

 

FILTERING CONTAINER

Posted on by legna880

Filtering container

US Patent Application Number: US10272371

Abstract:

A collapsible bag or compressible bottle container for accepting, holding, and filtering fluid. Fluid is filtered upon entry to the container or filtered upon egress. The filter media resides either in a removable cap, or in a second fluid-tight compartment attached to, and in fluid communication with, the container body. A one-way valve with unique one-time connection to a fluid source mitigates potential contamination from container overuse. A second collapsible layer is used in conjunction with the collapsible bag to accept compressed air that provides rigidity for the container body.

 

Google Patents PDF:

https://patentimages.storage.googleapis.com/d8/36/de/354da311c65dd7/US10272371.pdf

Water Filtration System

Posted on by legna880

WATER FILTRATION SYSTEM
US Patent Application Number: 20190126174

 

Abstract

A water filtration system includes a raw water reservoir that holds raw water. The system also includes a gravity filtration assembly to remove particles from the water as it passes through from the raw water reservoir. The filter of the assembly includes immobilized filter media within an enclosure.

 

Link va USPTO

Reverse Flow Gravity Filter Cartridge

Posted on by legna880

US Publication Number: WO 2016033596 A1

ABSTRACT
A carafe filter cartridge for reverse flow applications where the filter housing and filter media top end cap directs unfiltered fluid into the filter media annular cavity, through the filter media sidewalls. And the filter media bottom end cap prohibits egress, filter fluid from exiting through the filter media end or the annular cavity. Filtered fluid is instead directed out through apertures in the filter housing sidewall. The optimum ratio of annular cavity and/or top end cap orifice area to the respective perimeter is determined to remove the risk of detrimental fluid flow due to air bubble generation.

 

Link via Google Patents

Method of making a filter media with an enriched binder (Continuation)

Posted on by legna880

US Patent Number: US 9289702
Abstract
Water filtration media having a charged material affixed directly to binder material used in the fabrication of the filter media. A microbiological interception enhancing agent is added to the binder directly. The media having a charged material and a microbiological interception enhancing agent both affixed directly on or in a binder material is then combined with core filter media and prepared as a filtration media. A filter is prepared from the treated filter media.
 
Link via USPTO

https://patentimages.storage.googleapis.com/97/50/fb/d12f6cec32f2e0/US9289702.pdf

Filter media for gravity filtration applications

Posted on by legna880

US Publication Number:  US 20150014240 A1

ABSTRACT
A gravity filter media fabricated from multiple spiral wound or pleated layers, where different layers are designed for specific contaminant removal process and the layers are combined into a single pack for ease of use. The layers or fiber sheets are chemically treated for contaminant removal, with different layers having different chemical treatments, or the layers are immobilized with particles of various sizes for use as low contact-time adsorbents, with different layers having different immobilized particles, or the pore structure is varied from one fiber sheet to another—one being a tight pore structure, and the other being a more open pore structure, or any combination thereof. When using immobilized particles, the immobilized particles can be chemically treated for the specific removal of targeted contaminants, and multi-layered for custom designed removal of specific contaminants.
Link via Google Patents

Carafe filter with air lock prevention feature

Posted on by legna880

US Publication Number: US 9849407
ABSTRACT
 
A filter for gravity-fed applications, having filter media with a hollow center, the filter being generally prone to a degradation or cessation in fluid flow due to air entrapment or air lock within the filter housing cavity, which develops during filtering. A diffuser element is introduced to pierce the entrapped air bubble, the diffuser element being an elongated structure connected to the filter housing top end cap and extending through the entrapped air bubble to the filter media.
 
Link via Google Patents

Method of making a filter media with an enriched binder

Posted on by legna880

US Patent Number: US 8622224 B2
[space_20]

ABSTRACT
Water filtration media having a charged material affixed directly to binder material used in the fabrication of the filter media. A microbiological interception enhancing agent is added to the binder directly. The media having a charged material and a microbiological interception enhancing agent both affixed directly on a binder material is then combined with core filter media and prepared as a filtration media. A filter is prepared from the treated filter media.
[space_20]
 

Formation and immobilization of small particles by using polyelectrolyte multilayers

Posted on by legna880
US Publication Number: US 9,718,013
[space_20]
ABSTRACT
A method for forming and immobilizing small particles on a filter substrate using a first and second polymer solution, a solution of sodium bromide and a solution of a metal salt. The method adjusts the pH of at least one of the first and second polymer solutions, immersing the filter substrate in the first polymer solution and immersing the filter substrate in the second polymer solution. The method includes repeating the steps of immersing the filter substrate in the first solution and the second solution alternately until desired number of layers is achieved. The method allows for the filter substrate to be immersed in the solution of the metal salt and subsequently in the solution of sodium bromide.
[space_20]

Uses of fibrillated nanofibers and the removal of soluble, colloidal, and insoluble particles from a fluid

Posted on by legna880
US Patent number: US 8002990

[space_20]
ABSTRACT

A filter for removing soluble, colloidal, and insoluble particles from a fluid, including lead using a first filter media for filtering soluble material from the fluid, a second filter media, adjacent and in fluid communication with, the first filter media, for filtering soluble material from said fluid, wherein the first and second filter media create a physical non-soluble particle barrier at their interface for capturing non-soluble particles, that when retained at the interface, become soluble over time in the fluid, and are subsequently removed by the second filter media. At least one of the filter media can be fibrillated nanofibers that are loaded with finely subdivided media of powdered ion exchange resins. A third filter media may be placed between the first and second filter media to enhance capturing and dissolving the physical non-soluble particles.
[space_20]

Distributing media files

Posted on by legna880

US Publication number: 2007005538
[space_20]

ABSTRACT
The present invention is directed to a system, method, and apparatus of downloading digital media files by a user wherein a compter user may download digital media files without incurring any charges whereby the computer user is subject to a targeted advertisement, in particular, during the file download time. Fees collected from advertisers can be used to offset the royalties due to rights holders of the digital media files such that the download is free for the user. Preferably, this system and apparatus can be used to disseminate digital media files such as music, books, artwork, video, games, ring tones, and multimedia works.
[space_20]