YF

Yasuhiro Fukuda

OC Oki Electric Industry Co.: 13 patents #83 of 2,807Top 3%
OC Oki Semiconductor Co.: 7 patents #9 of 526Top 2%
RO Roland: 6 patents #32 of 292Top 15%
NE Nec: 3 patents #4,195 of 14,502Top 30%
TU Tohoku University: 1 patents #615 of 1,680Top 40%
TC Toppan Forms Co.: 1 patents #13 of 46Top 30%
TI Texas Instruments: 1 patents #7,357 of 12,488Top 60%
AS Aichi Steel: 1 patents #53 of 108Top 50%
TO Toyota: 1 patents #15,335 of 26,838Top 60%
EC Electric Industry Co.: 1 patents #1 of 15Top 7%
FL Fujitsu Ten Limited: 1 patents #456 of 996Top 50%
NE Nec Electronics: 1 patents #715 of 1,789Top 40%
Overall (All Time): #93,174 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
6222400 Lock-in detecting circuit having variable window for checking phase locked loop and method used therein Takafumi Esaki, Yoshiyuki Uto, Hiroshi Furukawa 2001-04-24
5850094 Semiconductor device Katsuhiro Kato 1998-12-15
5781389 Transistor protection circuit Shinnichi Fukuzako 1998-07-14
5646449 Semiconductor device having a multi-layered conductive structure which includes an aluminum alloy layer, a high melting temperature metal layer, and a high melting temperature nitride layer Makiko Nakamura, Yasuyuki Tatara, Yusuke Harada, Hiroshi Onoda 1997-07-08
5608594 Semiconductor integrated circuit with surge-protected output MISFET's 1997-03-04
5432369 Input/output protection circuit Yoshiaki Katakura 1995-07-11
5288948 Structure of a semiconductor chip having a conductive layer Tetsuhiko Sugahara, Norio Hirashita, Mitsuhiro Matsuo, Minoru Saito, Masayuki Kobayakawa +1 more 1994-02-22
4987464 Encapsulated FET semiconductor device with large W/L ratio Shooji Kitazawa 1991-01-22
4924280 Semiconductor fet with long channel length Shooji Kitazawa 1990-05-08
4823088 Method of and apparatus for testing semiconductor device for electrostatic discharge damage 1989-04-18
4636724 Method and apparatus for examining electrostatic discharge damage to semiconductor devices Ikuo Suganuma 1987-01-13