Tokyo Ohka Kogya Co., Ltd.

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Slit nozzle and apparatus for supplying treatment liquid using slit...
- Patent number 7,381,270
- Issue date Jun 3, 2008
- Tokyo Ohka Kogya Co., Ltd.
- Futoshi Shimai
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
Novolak resin precursor, novolak resin and positive photoresist com...
- Patent number 6,207,788
- Issue date Mar 27, 2001
- Tokyo Ohka Kogya Co., Ltd.
- Ken Miyagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Undercoating composition for photolithographic resist
- Patent number 5,939,510
- Issue date Aug 17, 1999
- Tokyo Ohka Kogya Co., Ltd.
- Mitsuru Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Stock developer solutions for photoresists and developer solutions...
- Patent number 5,753,421
- Issue date May 19, 1998
- Tokyo Ohka Kogya Co., Ltd.
- Mitsuru Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

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