Yoshiyuki Sato

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Samukawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for forming a resist pattern on a substrate surface and a sc...
- Patent number 4,873,177
- Issue date Oct 10, 1989
- Tokyo Ohka Kogyo Co., Ltd.
- Hatsuyuki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing solution for positive-working photoresist comprising tma...
- Patent number 4,833,067
- Issue date May 23, 1989
- Tokyo Ohka Kogyo Co., Ltd.
- Hatsuyuki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer solution for positive-working photoresist compositions co...
- Patent number 4,820,621
- Issue date Apr 11, 1989
- Tokyo Ohka Kogyo Co., Ltd.
- Hatsuyuki Tanka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing solution for positive-working photoresist comprising a m...
- Patent number 4,784,937
- Issue date Nov 15, 1988
- Tokyo Ohka Kogyo Co., Ltd.
- Hatsuyuki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY