YH

Yasuhiko Hirayama

AK Asahi Kogaku Kogyo K.K.: 4 patents #27 of 180Top 15%
PE Pentax: 3 patents #351 of 761Top 50%
Overall (All Time): #767,452 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
RE34037 Support for biomedical implant device Masahide Inoue, Takeshi Ichitsuka, Shozo Koshikawa, Tateki Kitaoka, Nobuo Nakabayashi +2 more 1992-08-18
5128146 Apatite coated article and process for producing the same Haruko Ikata, Satoshi Ojima 1992-07-07
5089195 Method for producing calcium phosphate-based material Takeshi Ichitsuka, Tetsuro Ogawa 1992-02-18
5017518 Process for producing calcium phosphate ceramics having porous surface Tetsuro Ogawa, Satoshi Ojima 1991-05-21
4957674 Method for producing calcium phosphate-based material Takeshi Ichitsuka, Tetsuro Ogawa 1990-09-18
4946378 Artificial intervertebral disc Haruko Ikata, Satoshi Ojima, Hiromi Matsuzaki 1990-08-07
4798585 Support for biomedical implant device Masahide Inoue, Takeshi Ichitsuka, Shozo Koshikawa, Tateki Kitaoka, Nobuo Nakabayashi +2 more 1989-01-17