AY

Akira Yamakawa

Sumitomo Electric Industries: 94 patents #26 of 21,551Top 1%
UN Unknown: 6 patents #2,010 of 83,584Top 3%
DA Daicel: 5 patents #63 of 523Top 15%
JI Japan Atomic Energy Research Institute: 1 patents #188 of 609Top 35%
AT Agency Of Industrial Science And Technology: 1 patents #568 of 1,778Top 35%
📍 Itami, JP: #5 of 1,436 inventorsTop 1%
Overall (All Time): #14,528 of 4,157,543Top 1%
100
Patents All Time

Issued Patents All Time

Showing 76–100 of 100 patents

Patent #TitleCo-InventorsDate
5229549 Ceramic circuit board and a method of manufacturing the ceramic circuit board Mitsuo Osada, Nobuo Ogasa 1993-07-20
5219803 Sintered body of aluminum nitride Masaya Miyake, Hitoyuki Sakanoue, Koichi Sogabe 1993-06-15
5217305 Method of evaluating ceramics Masaya Miyake, Kozo Ishizaki, Koji Watari 1993-06-08
5214005 Glass-aluminum nitride composite material Koichi Sogabe 1993-05-25
5204297 Silicon nitride sintered body and process for producing the same Takehisa Yamamoto, Takao Nishioka, Kenji Matsunuma, Masaya Miyake 1993-04-20
5190601 Surface structure of ceramics substrate and method of manufacturing the same Akira Sasame 1993-03-02
5173458 Silicon nitride sintered body and process for producing the same Takao Nishioka, Kenji Matsunuma, Koichi Sogabe, Tomoyuki Awatsu, Masaya Miyake +1 more 1992-12-22
5165981 Ceramic substrate and preparation of the same Tadashi Igarashi 1992-11-24
5161305 Method of processing a circuit board 1992-11-10
5134461 Ceramics substrate with an improved surface structure for electronic components Akira Sasame 1992-07-28
5085923 Heat-conductive aluminum nitride sintered body and method of manufacturing the same Masaya Miyake, Hitoyuki Sakanoue, Hisao Takeuchi, Koichi Sogabe, Akira Sasame 1992-02-04
5036026 Sintered body of aluminum nitride and method for producing the same Hitoyuki Sakanoue, Hisao Takeuchi 1991-07-30
5034357 Heat-conductive aluminum nitride sintered body and method of manufacturing the same Masaya Miyake, Hitoyuki Sakanoue, Hisao Takeuchi, Koichi Sogabe, Akira Sasame 1991-07-23
5010388 Connection structure between components for semiconductor apparatus Akira Sasame, Hitoyuki Sakanoue, Hisao Takeuchi, Masaya Miyake, Yasuhisa Yushio +1 more 1991-04-23
4994418 Ceramic compact and a process for the production of the same Yoshihiko Doi, Masaya Miyake 1991-02-19
4965044 Method of sintering ceramics and metal dispersed reinforced ceramics obtained thereby Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi, Osamu Komura, Eiji Kamijo +1 more 1990-10-23
4965659 Member for a semiconductor structure Akira Sasame, Hitoyuki Sakanoue, Masaya Miyake 1990-10-23
4906295 Dispersed reinforced ceramics Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi, Osamu Komura, Eiji Kamijo +1 more 1990-03-06
4886709 Member for semiconductor apparatus Akira Sasame, Hitoyuki Sakanoue, Hisao Takeuchi, Masaya Miyake, Yasuhisa Yushio 1989-12-12
4769350 Silicon nitride sintered material for cutting tools and process for making the same Takao Nishioka, Masaya Miyake 1988-09-06
4764490 Process for preparation of sintered silicon nitride Masaya Miyake, Takao Nishioka 1988-08-16
4745022 Composite sintered silicon nitride material and cutting tool made therefrom Masaya Miyake 1988-05-17
4660114 Thin film magnetic heads and substrates therefore Yoshinobu Takeda, Eiji Kamijo 1987-04-21
4598053 Ceramic compacts Eiji Kamijo 1986-07-01
4383957 Method of sintering a ceramic composition Akira Doi, Yoshihiko Doi 1983-05-17