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.

Date of Patent:
Oct. 15, 2013

Filed:

Mar. 20, 2009
Applicants:

Peiyuan Qian, Hong Kong, CN;

Xiaojian Zhou, Hong Kong, CN;

Hongping He, Hong Kong, CN;

Ying Xu, Hong Kong, CN;

Inventors:

Peiyuan Qian, Hong Kong, CN;

Xiaojian Zhou, Hong Kong, CN;

Hongping He, Hong Kong, CN;

Ying Xu, Hong Kong, CN;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05C 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method to utilize a chemical genus of chromen-4-one derivatives as non-toxic, environment friendly antifouling agent, a coating material for objects submerged under the water and subject to biofouling based on the chromen-4-one compounds, as well as a method of obtaining one of such chromen-4-one antifouling compounds, 4',5,7-trihydroxy-isoflavone, from a natural source. Particularly exemplary of such substituted chromen-4-one antifouling compounds are provided and they are 4′,5,7 -trihydroxy-isoflavone, 4′,5-dihydroxy-3,6,7,8 tetramethoxy-flavone, 3′,5-dihydroxy-3,4′,6,8 tetramethoxy-flavone, 4′,5-dihydroxy-3,6,7-trimethoxy-flavone, 4′,5,7-trihydroxy-flavone, 3′,4′,6,7-tetrahydroxy-flavone, and 5-monohydroxy-flavone.


Find Patent Forward Citations

Qian, Peiyuan. (2013). Antifouling method and composition using chromen-4-one derivatives (U.S. Patent No. 8557331). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8557331

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