logo

For the Inventor, By the Inventor

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 5028451 B1

PDFFull Text
Date of Patent:
Jul. 02, 1991

Filed:

Mar. 02, 1990

Method of producing sintered hard metal with diamond film

Applicant:
Inventors:

Toshimichi Ito, Chiba, JP;

Satoshi Katsumata, Chiba, JP;

Masakazu Watanabe, Nagoya, JP;

Satoshi Iio, Nagoya, JP;

Assignees:

Idemitsu Petrochemical Company Limited, Tokyo, JP;

NGK Spark Plug CP. Ltd., Aichi, JP;

Attorney:

Browdy and Neimark

Primary Examiner:

William R Dixon, Jr

Assistant Examiner:

Willie J Thompson

Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 39 ; 51293 ; 51295 ; 427 38 ; 427 451 ; 427249 ; 4272553 ;
Abstract

The present invention is directed to a method of producing a sintered hard metal having a diamond film wherein a gas that is obtained by activating a raw material gas containing 2 to 60 mol % of carbon monoxide and hydrogen gas is brought in contact with a sintered hard metal to form a diamond film, thereby a diamond film can be formed on said sintered hard metal with the adhesion of the diamond excellent.

Find Patent Forward Citations

Quick Actions:

Ito, Toshimichi. (1991). Method of producing sintered hard metal with diamond film (U.S. Patent No. 5028451). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5028451

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

Loading…