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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10981096 B1

PDFFull Text
Date of Patent:
Apr. 20, 2021

Filed:

Mar. 27, 2018

Process for making high efficiency synthetic filter media

Applicant:

Knowlton Technologies, Llc, Watertown, NY (US);

Inventors:

Richard Frank Barlow, Jr., Evans Mills, NY (US);

Keh Dema, Johnson City, TN (US);

Assignee:

Knowlton Technologies, LLC, Watertown, NY (US);

Attorney:

Polly C. Owen

Primary Examiner:

Ismael Izaguirre

Int. Cl.
CPC ...
B01D 39/18 (2006.01); B01D 39/10 (2006.01); D04H 1/425 (2012.01); D04H 1/4258 (2012.01); D04H 1/4382 (2012.01); D04H 1/65 (2012.01); D04H 1/732 (2012.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01); D01F 2/28 (2006.01);
U.S. Cl.
CPC ...
B01D 39/18 (2013.01); B01D 39/10 (2013.01); B01D 39/163 (2013.01); B01D 39/1661 (2013.01); B01D 39/2013 (2013.01); B01D 39/2024 (2013.01); D04H 1/425 (2013.01); D04H 1/4258 (2013.01); D04H 1/4382 (2013.01); D04H 1/65 (2013.01); D04H 1/732 (2013.01); B01D 2239/02 (2013.01); B01D 2239/0208 (2013.01); B01D 2239/064 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/0636 (2013.01); B01D 2239/086 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1225 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1258 (2013.01); D01F 2/28 (2013.01);
Abstract

The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.

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