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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 9114362 B1

PDFFull Text
Date of Patent:
Aug. 25, 2015

Filed:

Sep. 26, 2013

Treatment of cold start engine exhaust

Applicants:

Stacey Ian Zones, San Francisco, CA (US);

Tecle S. Rufael, Stafford, TX (US);

Inventors:

Stacey Ian Zones, San Francisco, CA (US);

Cabral M. Williams, Houston, TX (US);

Tecle S. Rufael, Stafford, TX (US);

Allen W. Burton, Richmond, CA (US);

Assignee:

Chevron U.S.A. Inc., San Ramon, CA (US);

Attorneys:

E. Joseph Gess

Terrence Flaherty

Melissa M. Hayworth

Primary Examiner:

Melvin C Mayes

Assistant Examiner:

Sheng H Davis

Int. Cl.
CPC ...
B01J 29/80 (2006.01); B01J 29/00 (2006.01); B01J 35/00 (2006.01); B01D 53/94 (2006.01); B01D 53/04 (2006.01); B01J 29/70 (2006.01);
U.S. Cl.
CPC ...
B01D 53/945 (2013.01); B01D 53/04 (2013.01); B01D 53/9486 (2013.01); B01J 29/80 (2013.01); B01D 2253/104 (2013.01); B01D 2253/108 (2013.01); B01D 2255/102 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/50 (2013.01); B01D 2259/4143 (2013.01); B01J 29/70 (2013.01); B01J 29/7007 (2013.01); Y02C 20/20 (2013.01); Y02T 10/22 (2013.01);
Abstract

The present invention relates to a process for reducing cold start emissions in an exhaust gas stream by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4.

Find Patent Forward Citations

Zones, Stacey. (2015). Treatment of cold start engine exhaust (U.S. Patent No. 9114362). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9114362

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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