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.:
Date of Patent:
Dec. 11, 2001
Filed:
Mar. 19, 1999
Applicant:
Inventors:
Fumiyo Mizuide, Iwaki, JP;
Haruyoshi Tatsu, Kitaibaraki, JP;
Sergey Vasilievich Sokolov, St. Petersburg, RU;
Michail Vasiliyevich Zhuravlev, St. Petersburg, RU;
Igor Vladimirovich Kokotin, St. Petersburg, RU;
Olga Viktorinovna Blagodatova, St. Petersburg, RU;
Assignee:
Nippon Mektron Limited, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F 8/06 ; C08F 8/44 ; C08F 1/422 ;
U.S. Cl.
CPC ...
C08F / ; C08F 8/06 ; C08F 8/44 ; C08F 1/422 ;
Abstract
A carboxyl group-containing fluorine copolymer is produced safely at a low cost by treating a vinylidene fluoride copolymer with a base and a peroxide, preferably in the presence of a phase-transfer catalyst such as a quaternary ammonium salt or a quaternary phosphonium salt.