Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8857857 | Threaded joint for steel pipes | Kunio Goto, Shigeo Nagasaku, Hiroaki Ikegami | 2014-10-14 |
| 8276946 | Threaded joint for steel tubes | Masanari Kimoto, Kunio Goto, Masaru Takahashi, Kunihiro Fukui, Shigeo Nagasaku +2 more | 2012-10-02 |
| 7740285 | Threaded joint for steel pipes | Shigeo Nagasaku, Kunio Goto, Hiroaki Ikegami | 2010-06-22 |
| 6881643 | Semiconductor device producing method and semiconductor device | — | 2005-04-19 |
| 5965942 | Semiconductor memory device with amorphous diffusion barrier between capacitor and plug | Yasuyuki Itoh, Jun Kudo, Keizo Sakiyama | 1999-10-12 |
| 5858851 | Manufacturing method of electrode | Satoru Yamagata, Jun Kudo | 1999-01-12 |
| 5854104 | Process for fabricating nonvolatile semiconductor memory device having a ferroelectric capacitor | Takao Kinoshita, Jun Kudo | 1998-12-29 |
| 5776356 | Method for etching ferroelectric film | Seiichi Yokoyama, Yasuyuki Itoh, Jun Kudo, Keizo Sakiyama, Hitoshi Urashima | 1998-07-07 |
| 5708284 | Non-volatile random access memory | — | 1998-01-13 |
| 5638319 | Non-volatile random access memory and fabrication method thereof | Kazuya Ishihara | 1997-06-10 |
| 5515984 | Method for etching PT film | Seiichi Yokoyama, Yasuyuki Ito, Jun Kudo, Keizo Sakiyama | 1996-05-14 |
| 5443030 | Crystallizing method of ferroelectric film | Kazuya Ishihara, Masaya Komai | 1995-08-22 |
| 5420079 | Process for producing semiconductor device comprising two step annealing treatment | Akitsu Ayukawa, Kenichi Tanaka | 1995-05-30 |
| 5416735 | Non-volatile random access memory with ferroelectric capacitor | Kenichi Tanaka, Keizo Sakiyama | 1995-05-16 |
| 5414653 | Non-volatile random access memory having a high load device | Kazuya Ishihara, Kenichi Tanaka, Keizo Sakiyama | 1995-05-09 |
| 5414654 | Driving circuit of a ferroelectric memory device and a method for driving the same | Yasushi Kubota | 1995-05-09 |
| 5397446 | Method of forming a ferroelectric film | Kazuya Ishihara | 1995-03-14 |
| 5383151 | Dynamic random access memory | Kenichi Tanaka, Keizo Sakiyama | 1995-01-17 |
| 5379718 | Method for forming a titanium thin film | — | 1995-01-10 |
| 5357460 | Semiconductor memory device having two transistors and at least one ferroelectric film capacitor | Tatsushi Yusuki, Kenichi Tanaka, Keizo Sakiyama, Katsuji Iguchi | 1994-10-18 |
| 5348900 | Process for manufacturing a semiconductor device including heat treatment in ammonia or oxygen | Akitsu Ayukawa | 1994-09-20 |
| 5322810 | Method for manufacturing a semiconductor device | Akitsu Ayukawa, Hiroshi Ishihara | 1994-06-21 |
| 5312774 | Method for manufacturing a semiconductor device comprising titanium | Kazuyo Nakamura, Keiichiro Uda, Osamu Yamazaki, Hiromi Hattori, Nobutaka Fukushima | 1994-05-17 |
| 5298446 | Process for producing semiconductor device | Akitsu Ayukawa, Kenichi Tanaka | 1994-03-29 |
| 5293075 | Semiconductor device with PZT/PLZT film and lead-containing electrode | Kazuya Ishihara, Keizo Sakiyama | 1994-03-08 |