Hitoshi Akiyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing porous sintered apatite material
- Patent number 4,919,751
- Issue date Apr 24, 1990
- Asahi Kogaku Kogyo Kabushiki Kaisha
- Masaya Sumita
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
THREE DIMENSIONAL PUZZLE
- Publication number 20100225057
- Publication date Sep 9, 2010
- Tokai University Educational System
- Hitoshi Akiyama
- A63 - SPORTS GAMES AMUSEMENTS