Kaoru Tatekawa

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Positive-working quinonediazide sulfonic acid ester resist composit...
- Patent number 5,849,457
- Issue date Dec 15, 1998
- Sumitomo Chemical Company, Limited
- Katsuhiko Namba
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY