AY

Akira Yamagiwa

HI Hitachi: 53 patents #249 of 28,497Top 1%
HS Hitachi Hokkai Semiconductor: 4 patents #16 of 98Top 20%
IS Ishikawa Seisakusho: 1 patents #7 of 32Top 25%
RT Renesas Technology: 1 patents #1,991 of 3,337Top 60%
LG: 1 patents #17,402 of 26,165Top 70%
Overall (All Time): #43,403 of 4,157,543Top 2%
57
Patents All Time

Issued Patents All Time

Showing 26–50 of 57 patents

Patent #TitleCo-InventorsDate
6049221 Semiconductor integrated circuit system having function of automatically adjusting output resistance value Kenichi Ishibashi, Takehisa Hayashi, Tsutomu Goto, Hideki Murayama, Yasuhiro Ishii +2 more 2000-04-11
6034878 Source-clock-synchronized memory system and memory unit Hideki Osaka, Masaya Umemura, Toshitsugu Takekuma 2000-03-07
5872471 Simultaneous bidirectional transmission circuit Kenichi Ishibashi, Takehisa Hayashi, Tsutomu Goto, Toshitsugu Takekuma, Toshiro Takahashi +1 more 1999-02-16
5867541 Method and system for synchronizing data having skew Akira Tanaka, Kenichi Ishibashi, Takehisa Hayashi 1999-02-02
5852365 Variable logic circuit and semiconductor integrated circuit using the same Nobuo Tamba, Mitsugu Kusunoki, Takeshi Miyazaki, Akira Masaki 1998-12-22
5852728 Uninterruptible clock supply apparatus for fault tolerant computer system Koji Matsuda, Soichi Takaya, Yoshihiro Miyazaki, Kenichi Kurosawa, Shinichiro Yamaguchi +3 more 1998-12-22
5818253 Signal transmitting device, circuit block and integrated circuit suited to fast signal transmission Toshitsugu Takekuma, Ryoichi Kurihara 1998-10-06
5802390 Data bus circuit and method of changing over termination resistor of the data bus circuit Kenji Kashiwagi, Masao Inoue 1998-09-01
5794020 Data transfer apparatus fetching reception data at maximum margin of timing Akira Tanaka, Toshio Doi, Kenichi Ishibashi, Takehisa Hayashi 1998-08-11
5787261 Data transfer system, computer system and active-line inserted/withdrawn functional circuit board Hideki Osaka, Ryoichi Kurihara, Masao Inoue 1998-07-28
5767695 Fast transmission line implemented with receiver, driver, terminator and IC arrangements Toshitsugu Takekuma, Ryoichi Kurihara, Kenji Kashiwagi, Masao Inoue 1998-06-16
5668834 Signal transmitting device suitable for fast signal transmission including an arrangement to reduce signal amplitude in a second stage transmission line Toshitsugu Takekuma, Ryoichi Kurihara 1997-09-16
5666302 Simultaneous bidirectional transmission apparatus for transmitting and receiving differential signals Akira Tanaka, Kenichi Ishibashi, Takehisa Hayashi 1997-09-09
5627481 Fast transmission line implemented with receiver, driver, terminator and IC arrangements Toshitsugu Takekuma, Ryoichi Kurihara 1997-05-06
5621774 Method and apparatus for synchronizing parallel data transfer Kenichi Ishibashi, Akira Tanaka, Takehisa Hayashi 1997-04-15
5568063 Signal transmitting device, circuit block and integrated circuit suited to fast signal transmission Toshitsugu Takekuma, Ryoichi Kurihara 1996-10-22
5548226 Fast transmission line implemented with receiver, driver, terminator and IC arrangements Toshitsugu Takekuma, Ryoichi Kurihara 1996-08-20
5504924 Cooling system of electronic computer using flexible members in contact with semiconductor devices on boards Shingeo Ohashi, Tadakatsu Nakajima, Heikichi Kuwahara, Toshio Hatada, Hitoshi Matsushima +3 more 1996-04-02
5497263 Variable delay circuit and clock signal supply unit using the same Noboru Masuda, Kazumichi Yamamoto, Kazunori Nakajima, Toshihiro Okabe, Mikio Yamagishi +3 more 1996-03-05
5452436 System for connecting plurality of electronic units to data and clock buses wherein transmitting and receiving data in synchronization with transmitting and receiving clock signals Kiyokazu Arai, Toshihiro Okabe 1995-09-19
5428503 Jet cooling apparatus for cooling electronic equipment and computer having the same mounted thereon Hitoshi Matsushima, Toshihiro Komatu, Yoshihiro Kondou, Toshio Hatada, Susumu Iwai +3 more 1995-06-27
5365402 Cooling apparatus of electronic device Toshio Hatada, Shigeo Ohashi, Tadakatsu Nakajima, Heikichi Kuwahara, Hitoshi Matsushima +5 more 1994-11-15
5361188 Cooling apparatus of electronic equipment Yoshihiro Kondou, Hitoshi Matsushima, Toshio Hatada, Hiroshi Inouye, Toshihiro Komatsu +1 more 1994-11-01
5315482 Semiconductor apparatus of module installing type Akira Tanaka, Hiroichi Shinohara, Kazuji Yamada, Takao Ohba, Hitoshi Yoshidome +4 more 1994-05-24
5195576 LSI cooling apparatus and computer cooling apparatus Toshio Hatada, Hitoshi Matsushima, Yoshihiro Kondou, Hiroshi Inoue, Kanji Otsuka +2 more 1993-03-23