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:
May. 10, 1994
Filed:
Dec. 11, 1991
Applicant:
Inventors:
Minoru Yoshinaka, Osaka, JP;
Eizo Asakura, Osaka, JP;
Mitsumasa Oku, Osaka, JP;
Kouziro Matsuo, Yamatokoriyama, JP;
Hidenosuke Nakamura, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; B32B / ; B32B / ; D02G / ;
U.S. Cl.
CPC ...
428328 ; 428404 ; 428692 ; 428697 ; 428698 ; 428910 ; 428919 ; 428928 ; 428401 ; 342-1 ;
Abstract
A radio wave absorbing material comprising zinc oxide whiskers. In a preferred embodiment, the zinc oxide whiskers are comprised of a central part and needle crystal projections extending from said central part in plural different axial directions.