IDiyas

For the Inventor, By the Inventor

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 10913049 B1

PDFFull Text
Date of Patent:
Feb. 09, 2021

Filed:

Jan. 13, 2016

Compositions and methods for producing high purity filter aids

Applicant:

Imerys Usa, Inc., Roswell, GA (US);

Inventors:

Robert Fleming, San Jose, CA (US);

Nicholas Jose, San Jose, CA (US);

Jeffrey D. Taniguchi, Santa Maria, CA (US);

Bo Wang, Union City, CA (US);

Assignee:

Imerys USA, Inc., Roswell, GA (US);

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Liam Royce

Int. Cl.
CPC ...
B01J 20/30 (2006.01); C12H 1/044 (2006.01); A23L 2/80 (2006.01); B01J 20/10 (2006.01); B01J 20/14 (2006.01); B01D 39/20 (2006.01); C04B 20/02 (2006.01); C04B 28/26 (2006.01); B01J 20/28 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
B01J 20/3071 (2013.01); A23L 2/80 (2013.01); B01D 39/2003 (2013.01); B01J 20/106 (2013.01); B01J 20/14 (2013.01); C04B 20/023 (2013.01); C04B 28/26 (2013.01); C12H 1/0408 (2013.01); B01D 2239/10 (2013.01); B01D 2239/1208 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1241 (2013.01); B01D 2239/1258 (2013.01); B01J 20/28002 (2013.01); B01J 20/28059 (2013.01); B01J 20/28076 (2013.01); B01J 20/28083 (2013.01); C04B 2111/00284 (2013.01); C04B 2111/00793 (2013.01); Y02W 30/91 (2015.05);
Abstract

A filter aid may include acid-washed diatomaceous earth having high purity, and perlite. A method of making a high purity filter aid may include acid washing diatomaceous earth to reduce the h in the diatomaceous earth, and combining the acid-washed diatomaceous earth with high purity perlite to obtain to obtain a high purity filter aid. A method of reducing extractable metals from diatomaceous earth may include washing the diatomaceous earth in a first acid, rinsing the diatomaceous earth, and washing the diatomaceous earth in a second acid. The first acid may include an inorganic acid having a first strength, and the second acid may include an organic acid having a second strength different than the first strength. A method of filtering a beverage may include passing the beverage through a filter including a filter aid including acid-washed diatomaceous earth having high purity, and perlite.

Find Patent Forward Citations

Loading…