Ushida; Masao

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ushida; Masao.The latest application filed is for "photomask blank and method of producing the same, method of producing photomask, and method of producing semiconductor device".

Company Profile

0.8.5

Ushida; Masao - Tokyo JP
Ushida; Masao - Yamanashi JP
Ushida; Masao - Kofu 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
Photomask blank and method of producing the same, method of producing photomask, and method of producing semiconductor device Grant 7,901,842 - Yamada , et al. March 8, 2	2011-03-08
Lithography mask blank Grant 7,781,125 - Ushida , et al. August 24, 2	2010-08-24
Halftone type phase shift mask blank and halftone type phase shift mask Grant 7,611,808 - Ushida , et al. November 3, 2	2009-11-03
Photomask Blank And Method Of Producing The Same, Method Of Producing Photomask, And Method Of Producing Semiconductor Device App 20090233182 - Yamada; Takeyuki ; et al.	2009-09-17
Photomask blank Grant D568,839 - Mitsui , et al. May 13, 2	2008-05-13
Halftone type phase shift mask blank and halftone type phase shift mask App 20070134568 - Ushida; Masao ; et al.	2007-06-14
Photomask blank Grant D543,160 - Mitsui , et al. May 22, 2	2007-05-22
Photomask blank, photomask, methods of manufacturing the same and methods of forming micropattern Grant 7,217,481 - Mitsui , et al. May 15, 2	2007-05-15
Halftone type phase shift mask blank and halftone type phase shift mask Grant 7,166,392 - Ushida , et al. January 23, 2	2007-01-23
Lithography mask blank App 20050250018 - Ushida, Masao ; et al.	2005-11-10
Photomask blank, photomask, methods of manufacturing the same and methods of forming micropattern App 20050142463 - Mitsui, Masaru ; et al.	2005-06-30
Photomask blank, photomask, methods of manufacturing the same, and method of forming micropattern Grant 6,899,979 - Mitsui , et al. May 31, 2	2005-05-31
Halftone type phase shift mask blank and halftone type phase shift mask App 20030219654 - Ushida, Masao ; et al.	2003-11-27

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