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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 12668682 B1

PDFFull Text
Date of Patent:
Jun. 30, 2026

Filed:

Jun. 20, 2023

Curable composition containing rice husk ash biosilica toughened epoxy resin

Applicant:

Najran University, Najran, SA;

Inventors:

Hassan A. Alshahrani, Najran, SA;

V. R. Arun Prakash, Najran, SA;

Assignee:

NAJRAN UNIVERSITY, Najran, SA;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Peter A Salamon

Int. Cl.
CPC ...
C08K 9/06 (2006.01); C01B 33/16 (2006.01); C01B 33/32 (2006.01); C08G 59/24 (2006.01); C08G 59/50 (2006.01); C09C 1/30 (2006.01); C09C 3/12 (2006.01);
U.S. Cl.
CPC ...
C08K 9/06 (2013.01); C01B 33/166 (2013.01); C01B 33/325 (2013.01); C08G 59/245 (2013.01); C08G 59/502 (2013.01); C09C 1/3081 (2013.01); C09C 3/12 (2013.01); C08K 2201/005 (2013.01);
Abstract

A curable composition includes at least one polyamine; an epoxy resin; and a silane-modified biosilica material. The silane-modified biosilica material is derived from rice husk and is present in the curable composition at a concentration of 0.01 to 10 wt. %, based on the total weight of the curable composition. The silane-modified biosilica material has an average particle size of 1 to 10 micrometers (μm). A method of making a cured composite material from the curable composition.

Find Patent Forward Citations

Alshahrani, Hassan. (2026). Curable composition containing rice husk ash biosilica toughened epoxy resin (U.S. Patent No. 12668682). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12668682

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

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