Okai; Kazuhisa

Patent Applications and Registrations

Patent applications and USPTO patent grants for Okai; Kazuhisa.The latest application filed is for "surface-treated steel sheet".

Company Profile

3.7.10

Okai; Kazuhisa - Chiyoda-ku Tokyo
Okai; Kazuhisa - Tokyo JP
Okai; Kazuhisa - Kawasaki JP
Okai; Kazuhisa - Fukuyama JP
Okai; Kazuhisa - Hiroshima JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Surface-treated Steel Sheet App 20220112579 - Yoshida; Masahiro ; et al.	2022-04-14
Surface-treatment solution for zinc or zinc alloy coated steel sheet, method of producing zinc or zinc alloy coated steel sheet with surface-coating layer, and zinc or zinc alloy coated steel sheet with surface-coating layer Grant 11,174,556 - Endo , et al. November 16, 2	2021-11-16
STEEL SHEET HAVING A HOT-DIP Zn-Al-Mg-BASED COATING FILM EXCELLENT IN TERMS OF SURFACE APPEARANCE AND METHOD OF MANUFACTURING THE SAME App 20210147971 - Harada; Hiroki ; et al.	2021-05-20
Surface-treatment Solution For Zinc Or Zinc Alloy Coated Steel Sheet, Method Of Producing Zinc Or Zinc Alloy Coated Steel Sheet App 20190242018 - ENDO; Reona ; et al.	2019-08-08
Surface-treated galvanized steel sheet with superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming and aqueous surface-treatment liquid for galvanized steel sheet Grant 8,304,092 - Okai , et al. November 6, 2	2012-11-06
Surface-treated steel sheet with excellent corrosion resistance and method for manufacturing same Grant 8,012,599 - Miyoshi , et al. September 6, 2	2011-09-06
Surface-treated steel sheet Grant 7,875,363 - Okai , et al. January 25, 2	2011-01-25
Surface-treated steel sheet and method for manufacturing the same Grant 7,842,400 - Yamaji , et al. November 30, 2	2010-11-30
Surface-treated galvanized steel sheet with superior flat-portion corrosion resistance, blackening resistance, and appearance and corrosion resistance after press forming and aqueous surface-treatment liquid for galvanized steel sheet App 20100035055 - Okai; Kazuhisa ; et al.	2010-02-11
Surface-Treated Steel Sheet App 20090274926 - Okai; Kazuhisa ; et al.	2009-11-05
Highly corrosion-resistant surface-treated steel sheet and method for producing same Grant 7,517,591 - Miyoshi , et al. April 14, 2	2009-04-14
Surface-treated steel sheet excellent in corrosion resistance, conductivity, and coating appearance Grant 7,348,068 - Matsuda , et al. March 25, 2	2008-03-25
Surface-treated steel sheet with excellent corrosion resistance and method for manufacturing same App 20080070018 - Miyoshi; Tatsuya ; et al.	2008-03-20
Surface-treated steel sheet and method for producing same App 20060182988 - Yamaji; Takafumi ; et al.	2006-08-17
Surface treated steel plate excellent in corrosion resitance electroconductivity and appearance of coating film App 20060177685 - Matsuda; Takeshi ; et al.	2006-08-10
Highly corrosion-resistant surface-treated steel sheet and method for producing same App 20060141230 - Miyoshi; Tatsuya ; et al.	2006-06-29
Surface-treated steel sheet excellent in resistance to white rust and method for production thereof App 20050147832 - Okai, Kazuhisa ; et al.	2005-07-07

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