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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 12240957 B1

PDFFull Text
Date of Patent:
Mar. 04, 2025

Filed:

Dec. 08, 2021

Method for fabricating impermeable porous particles

Applicant:

Eastman Kodak Company, Rochester, NY (US);

Inventors:

Kevin D. Lofftus, Fairport, NY (US);

John Leonard Muehlbauer, Stafford, NY (US);

Mridula Nair, Penfield, NY (US);

Assignee:

EASTMAN KODAK COMPANY, Rochester, NY (US);

Attorneys:

David A. Novais

J. Lanny Tucker

Primary Examiner:

Melissa A Rioja

Int. Cl.
CPC ...
C08J 3/12 (2006.01); C08J 9/28 (2006.01); C08J 9/36 (2006.01); C08K 7/22 (2006.01); C09D 5/02 (2006.01); C09D 5/30 (2006.01); C09D 7/40 (2018.01); C09D 7/41 (2018.01); C09D 7/65 (2018.01); C09D 11/023 (2014.01); C09D 11/037 (2014.01); C09D 11/106 (2014.01); C09D 11/107 (2014.01); C09D 133/04 (2006.01);
U.S. Cl.
CPC ...
C08J 9/365 (2013.01); C08J 3/126 (2013.01); C08J 9/286 (2013.01); C09D 5/022 (2013.01); C09D 5/30 (2013.01); C09D 7/41 (2018.01); C09D 7/65 (2018.01); C09D 7/70 (2018.01); C09D 11/023 (2013.01); C09D 11/037 (2013.01); C09D 11/107 (2013.01); C09D 133/04 (2013.01); C08J 2201/0544 (2013.01);
Abstract

A method for preparing core/shell particles includes forming a suspension of ethylenically unsaturated monomer droplets containing one or more monomers and a porogen in an aqueous medium containing a first stabilizer and a polymerization initiator, wherein at least one of the monomers is a cross-linking monomer, and wherein the first stabilizer is an inorganic colloid. The method further includes polymerizing the one or more monomers to form core/shell particles having a core of a porous polymer and a polymeric shell having a shell thickness of at least 5 nm, wherein any pores in the polymeric shell have a diameter of less than 2 nm.

Find Patent Forward Citations

Lofftus, Kevin. (2025). Method for fabricating impermeable porous particles (U.S. Patent No. 12240957). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12240957

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

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