TU

Tetsu Udagawa

HI Hitachi: 15 patents #2,636 of 28,497Top 10%
HE Hitachi Vlsi Engineering: 2 patents #292 of 666Top 45%
Overall (All Time): #327,296 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6924525 SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE INCLUDING MEMORY CELL SECTION HAVING CAPACITOR OVER BITLINE STRUCTURE AND WITH THE MEMORY AND PERIPHERAL SECTIONS HAVING CONTACT PLUG STRUCTURES CONTAINING A BARRIER FILM AND EFFECTING ELECTRICAL CONTACT WITH MISFETS OF BOTH MEMORY AND PERIPHERAL SECTIONS Seiji Narui, Kazuhiko Kajigaya, Makoto Yoshida 2005-08-02
6635918 Semiconductor integrated circuit device and method for manufacturing the same Seiji Narui, Kazuhiko Kajigaya, Makoto Yoshida 2003-10-21
RE37539 Sealed stacked arrangement of semiconductor devices Satoshi Oguchi, Masamichi Ishihara, Kazuya Ito, Gen Murakami, Ichiro Anjoh +7 more 2002-02-05
6150689 Semiconductor integrated circuit device and method for manufacturing the same Seiji Narui, Kazuhiko Kajigaya, Makoto Yoshida 2000-11-21
6108264 Dynamic type semiconductor memory device Yasushi Takahashi, Takashi Shinoda, Masamichi Ishihara, Kazumasa Yanagisawa 2000-08-22
5862095 Semiconductor memory having both a refresh operation cycle and a normal operation cycle and employing an address non-multiplex system Yasushi Takahashi, Takashi Shinoda, Masamichi Ishihara, Kazumasa Yanagisawa 1999-01-19
5719815 Semiconductor memory having a refresh operation cycle and operating at a high speed and reduced power consumption in a normal operation cycle Yasushi Takahashi, Takashi Shinoda, Masamichi Ishihara, Kazumasa Yanagisawa 1998-02-17
5701031 Sealed stacked arrangement of semiconductor devices Satoshi Oguchi, Masamichi Ishihara, Kazuya Ito, Gen Murakami, Ichiro Anjoh +7 more 1997-12-23
5506804 Dynamic Random Access Type Semiconductor Device Kazumasa Yanagisawa, Tatsuyuki Ohta, Kyoko Ishii, Hitoshi Miwa, Atsushi Nozoe +9 more 1996-04-09
5426616 Semiconductor IC device having a voltage conversion circuit which generates an internal supply voltage having value compensated for external supply voltage variations Kazuhiko Kajigaya, Kyoko Ishii, Manabu Tsunozaki, Kazuyoshi Oshima, Masashi Horiguchi +4 more 1995-06-20
5332922 Multi-chip semiconductor package Satoshi Oguchi, Masamichi Ishihara, Kazuya Ito, Gen Murakami, Ichiro Anjoh +7 more 1994-07-26
5276648 Testing method for a semiconductor memory device Kazumasa Yanagisawa, Tatsuyuki Ohta, Kyoko Ishii, Hitoshi Miwa, Atsushi Nozoe +9 more 1994-01-04
5150325 Bi-CMOS semiconductor memory device, including improved layout structure and testing method Kazumasa Yanagisawa, Tatsuyuki Ohta, Kyoko Ishii, Hitoshi Miwa, Atsushi Nozoe +9 more 1992-09-22
5043947 Semiconductor memory device Kazuyoshi Oshima, Takashi Yamazaki, Yasuhiro Kasama, Hiroaki Kotani 1991-08-27
4941129 Semiconductor memory device Kazuyoshi Oshima, Takashi Yamazaki, Yasuhiro Kasama, Hiroaki Kotani 1990-07-10