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last 30 patents
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Patent Grant
Apparatus for designing photomasks
Patent number
5,761,075
Issue date
Jun 2, 1998
Kabushiki Kaisha Toshiba
Kazuko Oi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for designing photomasks
Patent number
5,541,025
Issue date
Jul 30, 1996
Kabushiki Kaisha Toshiba
Kazuko Oi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for designing phase-shifting masks with automatization capab...
Patent number
5,538,815
Issue date
Jul 23, 1996
Kabushiki Kaisha Toshiba
Kazuko Oi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY