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:
Jan. 04, 2005
Filed:
Nov. 13, 2002
Applicants:
Hiroaki Nasu, Aichi, JP;
Wataru Matsutani, Nagoya, JP;
Makoto Sugimoto, Nagoya, JP;
Mitsuru Yoshida, Nagoya, JP;
Inventors:
Hiroaki Nasu, Aichi, JP;
Wataru Matsutani, Nagoya, JP;
Makoto Sugimoto, Nagoya, JP;
Mitsuru Yoshida, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T 1320 ;
U.S. Cl.
CPC ...
Abstract
A chromate film-containing plug metal component which is a metal component for a spark plug or a glow plug, wherein: the metal component has a surface, at least part of the surface being coated with a chromate film comprising at least 95% by weight of trivalent chrome based on 100% by weight of a total chrome content in the chromate film; and the chromate film comprises dye particles.