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:
Jul. 25, 1995
Filed:
Mar. 31, 1993
Kiyoto Ohtsuka, Takatsuki, JP;
Toshiyuki Ohsawa, Kawasaki, JP;
Toshiyuki Kabata, Machida, JP;
Shushi Nishimura, Okayama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Kuraray Co., Ltd., Kurashiki, JP;
Abstract
A non-aqueous secondary battery using a non-aqueous electrolyte containing an alkali metal salt dissolved as an electrolyte in an organic polar solvent, includes a negative electrode which is composed of a carbon material with a graphite-like crystalline structure parameter Ip(002)/Io(002) at a diffraction peak at the (002) plane of an X-ray diffraction intensity curve being in the range of 0.7 to 0.95 and with a graphite-like crystalline structure parameter Ip(10)/Io(10) at a diffraction peak at the (10) plane of an X-ray diffraction intensity curve being 0.6 or less.