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:
Sep. 06, 1977
Filed:
Nov. 13, 1973
Applicant:
Inventor:
Isao Sumita, Toyonaka, JA;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252 632 ; 252 64 ; 307 / ; 260208 ; 260 66 ;
Abstract
There is provided a high polymer electret mainly composed of at least one member of a group consisting of poly-3,3-bis(chloromethyl)oxacyclobutane, poly-3,3-bis-(fluoromethyl)oxacyclobutane and poly-3,3-bis(bromoethyl)oxacyclobutane.