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:
Jan. 13, 1981
Filed:
Apr. 26, 1979
Teruhisa Kondo, Toyonaka-shi, Osaka-fu, JP;
Jiro Ishiguro, Ooeda, Ooaza, Kasukabe-shi, Saitama-ken, JP;
Nobuatsu Watanabe, Nagaokakyo-shi, Kyoto-fu, JP;
Other;
Abstract
Wet graphite particles obtained by subjecting graphite particles to oxidizing treatment with nitric acid of comparatively low concentration and a permanganic acid salt and impregnating the treated graphite particles with a specific antioxidant comprising a metal salt of a boric acid ester of a saccharide, are heated to form expanded graphite masses, which are then compressed together to obtain a flexible graphite product. The thus obtained flexible graphite product is not only excellent in heat resistance and chemical inertness but also free of contamination with sulfur and chlorine, and is very useful in various applications.