Tetsuo Okaniwa

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Minoo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Naphthostyril cationic dyes
- Patent number 3,974,178
- Issue date Aug 10, 1976
- Sumitomo Chemical Company, Limited
- Masaaki Ohkawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Dischargeable black dyeing on acid modified polyester fiber
- Patent number 3,958,287
- Issue date May 25, 1976
- Sumitomo Chemical Company, Limited
- Tetsuo Okaniwa
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Black-dyeing process of basic dyeable polyester fibers
- Patent number 3,948,598
- Issue date Apr 6, 1976
- Sumitomo Chemical Co., Ltd.
- Tetsuo Okaniwa
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...