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Masayoshi Tsunekawa
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Toyonaka, JP
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last 30 patents
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Patent Grant
Dental restoration composition
Patent number
5,306,338
Issue date
Apr 26, 1994
Sankin Kogyo K.K.
Masayoshi Tsunekawa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Dental materials having X-ray contrastability
Patent number
4,783,491
Issue date
Nov 8, 1988
Sankin Kogyo Kabushiki Kaisha
Masayoshi Tsunekawa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Phosphate derivatives, process for producing phosphate derivatives...
Patent number
4,442,239
Issue date
Apr 10, 1984
Sankin Industry Co., Ltd.
Masayoshi Tsunekawa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Cyclic pyrophosphate derivatives and their preparation
Patent number
4,404,150
Issue date
Sep 13, 1983
Sankin Industry Co., Ltd.
Masayoshi Tsunekawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compositions for diagnosis of dental caries activity
Patent number
4,397,944
Issue date
Aug 9, 1983
Sankin Industry Co., Ltd.
Tamotsu Komura
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE