Keiji Toei

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of forming small through-holes in thin metal plate
- Patent number 5,200,025
- Issue date Apr 6, 1993
- Dainippon Screen Manufacturing Co. Ltd.
- Keiji Toei
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Oxide film removing apparatus and removing method thereof using aze...
- Patent number 5,112,437
- Issue date May 12, 1992
- Dainippon Screen Mfg. Co., Ltd.
- Nobuatsu Watanabe
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method for removing a film on a silicon layer surface
- Patent number 5,022,961
- Issue date Jun 11, 1991
- Dainippon Screen Mfg. Co., Ltd.
- Akira Izumi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Photosensitive material with two photosensitive layers for forming...
- Patent number 4,599,295
- Issue date Jul 8, 1986
- Dainippon Screen Seizo K.K.
- Syuzi Kondo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Film for chromatic proofreading
- Patent number 4,568,627
- Issue date Feb 4, 1986
- Dainippon Screen Seizo Kabushiki Kaisha
- Tokujiro Ishida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY