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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.:

US 4215290 B1

PDFFull Text
Date of Patent:
Jul. 29, 1980

Filed:

Nov. 07, 1978

Thick-film circuit device

Applicant:
Inventors:

Chuichi Hikida, Mobara, JP;

Takao Kishino, Mobara, JP;

Tadashi Mizohata, Mobara, JP;

Tatsuo Yamaura, Mobara, JP;

Assignee:

Futaba Denshi Kogyo K.K., Chiba, JP;

Attorney:

Oblon, Fisher, Spivak, McClelland & Maier

Primary Examiner:

Palmer C Demeo

Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313496 ; 313220 ; 313221 ;
Abstract

A thick-film circuit device having a substrate of insulating material containing alkali components, a first crossover made of non-alkali type glass and formed on the substrate, wiring conductors formed on the first crossover according to a predetermined circuit pattern, and a second crossover made of glass and formed on the first crossover so that it covers the wiring conductors, the first crossover preventing entry of sodium ions into the second crossover.

Find Patent Forward Citations

Hikida, Chuichi. (1980). Thick-film circuit device (U.S. Patent No. 4215290). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4215290

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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