Kazuo Okamura

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel for oil country tubular goods and method of producing the same
- Patent number 10,407,758
- Issue date Sep 10, 2019
- Nippon Steel Corporation
- Tomohiko Omura
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for producing a low alloy steel for oil country tubular good...
- Patent number 9,909,198
- Issue date Mar 6, 2018
- Nippon Steel & Sumitomo Metal Corporation
- Tomohiko Omura
- C21 - METALLURGY OF IRON
Information Patent Grant
Quenching method for steel pipe
- Patent number 9,546,408
- Issue date Jan 17, 2017
- Nippon Steel & Sumitomo Metal Corporation
- Akihiro Sakamoto
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of controlling waste water treatment by anaerobic fermentation
- Patent number 5,180,494
- Issue date Jan 19, 1993
- Shimizu Construction Co., Ltd.
- Makoto Yamaguchi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
LOW ALLOY STEEL FOR OIL COUNTRY TUBULAR GOODS HAVING EXCELLENT SULF...
- Publication number 20180135154
- Publication date May 17, 2018
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Tomohiko OMURA
- C21 - METALLURGY OF IRON
Information Patent Application
LOW ALLOY STEEL FOR OIL COUNTRY TUBULAR GOODS HAVING EXCELLENT SULF...
- Publication number 20150247226
- Publication date Sep 3, 2015
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Tomohiko Omura
- C21 - METALLURGY OF IRON
Information Patent Application
STEEL FOR OIL COUNTRY TUBULAR GOODS AND METHOD OF PRODUCING THE SAME
- Publication number 20150114527
- Publication date Apr 30, 2015
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Tomohiko Omura
- C21 - METALLURGY OF IRON
Information Patent Application
QUENCHING METHOD FOR STEEL PIPE
- Publication number 20140007994
- Publication date Jan 9, 2014
- NIPPON STEEL & SUMITOMO METAL CORPORATION
- Akihiro Sakamoto
- C21 - METALLURGY OF IRON