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:
Mar. 17, 2009
Filed:
Dec. 05, 2002
Applicants:
Katsumi Ichitani, Ichihara, JP;
Makoto Takeishi, Ichihara, JP;
Inventors:
Katsumi Ichitani, Ichihara, JP;
Makoto Takeishi, Ichihara, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C21D 1/58 (2006.01); C21D 1/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a quenching method capable of producing quenched articles having little distortion and having a desired hardness. The quenching method with a coolant is specifically so controlled that the surface of the quenching bath is kept under pressure all the time throughout the step of cooling the articles being processed therein.
Ichitani, Katsumi. (2009). Quenching method (U.S. Patent No. 7503985). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7503985
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile