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:
Oct. 17, 1989
Filed:
Aug. 20, 1987
Applicant:
Inventors:
Kanji Ohya, Nagoya, JP;
Tsutomu Tsunooka, Nagoya, JP;
Koji Ogura, Nagoya, JP;
Hirofumi Ozeki, Nagoya, JP;
Takashi Yamamoto, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501134 ; 501136 ; 428137 ; 428209 ; 428901 ; 524413 ; 252 629 ;
Abstract
A particulate lead titanate ceramic obtained by calcining a mixture containing TiO.sub.2 and PbO at 1150.degree.-1300.degree. C., the proportion of the PbO being greater than 1 mole per mole of the TiO.sub.2. A composite material having the particulate lead titanate ceramic supported in an organic substrate exhibits improved piezoelectric properties and is useful as a piezoelectric element or pyroelectric element.