HW

Hirofumi Watanabe

Ricoh Company: 38 patents #399 of 9,818Top 5%
Mitsubishi Electric: 15 patents #1,633 of 25,717Top 7%
MK Mitsui Kinzoku Kogyo: 12 patents #3 of 99Top 4%
HS Hitachi Automotive Systems: 11 patents #120 of 1,636Top 8%
MC Mitsui Mining & Smelting Co.: 5 patents #110 of 838Top 15%
SO Sony: 5 patents #7,785 of 25,231Top 35%
MA Mitsui Kinzoku Act: 3 patents #30 of 109Top 30%
HA Hitachi Astemo: 3 patents #267 of 1,276Top 25%
TO Toyota: 2 patents #10,861 of 26,838Top 45%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
JM Jx Metals: 2 patents #8 of 59Top 15%
KS Kobe Steel: 2 patents #857 of 2,031Top 45%
MC Mizusawa Industrial Chemicals: 2 patents #29 of 90Top 35%
SM Smc: 2 patents #375 of 737Top 55%
TW The Japan Steel Works: 2 patents #158 of 643Top 25%
CF Chubu University Educational Foundation: 2 patents #2 of 38Top 6%
JG Jgc: 1 patents #137 of 393Top 35%
DC Dainichiseika Color & Chemicals Mfg. Co.: 1 patents #184 of 376Top 50%
MC Murata Manufacturing Co.: 1 patents #3,462 of 5,295Top 70%
HC Honshu Paper Co.: 1 patents #8 of 24Top 35%
FU Fujifilm: 1 patents #3,076 of 4,519Top 70%
MK Mitsubishi Denki K.K.: 1 patents #164 of 577Top 30%
MD Mitsubisih Denki: 1 patents #26 of 381Top 7%
KC Kobelco Construction Machinery Co.: 1 patents #243 of 422Top 60%
JM Jx Nippon Mining & Metals: 1 patents #167 of 262Top 65%
Overall (All Time): #10,126 of 4,157,543Top 1%
119
Patents All Time

Issued Patents All Time

Showing 101–119 of 119 patents

Patent #TitleCo-InventorsDate
5791301 Cooling system for construction equipment 1998-08-11
5718465 Child-proof for vehicle sliding door latch device Patrick Dowling 1998-02-17
5684370 Control unit and method which vary the output voltage of an AC generator based on a detected duty ratio 1997-11-04
5684833 Mutual conversion method of binary data and multilevel signal, its communication method, and its receiving device 1997-11-04
5672954 Control system for AC generator 1997-09-30
5656841 Semiconductor device with contact hole Kaihei Isshiki, Tetsurou Tanigawa, Yasuyuki Shindou, Katsunari Hanaoka 1997-08-12
5618068 Door lock apparatus with automatic door closing mechanism Jiro Mitsui, Yoshihiko Fujihara 1997-04-08
5608310 AC generator control apparatus for a motor vehicle 1997-03-04
5581172 Apparatus for controlling output of vehicular AC generator Shirou Iwatani, Keiichi Komurasaki, Tatsuki Kouwa, Katsunori Tanaka 1996-12-03
5493202 Voltage regulator device for vehicular AC generator Shirou Iwatani 1996-02-20
5316960 C-MOS thin film transistor device manufacturing method Noriyuki Terao 1994-05-31
5154457 Vehicular door lock device 1992-10-13
5144220 Vehicle AC generator control system Shiro Iwatani 1992-09-01
5067612 Shrink film package having perforated folded strip Mikio Tsuchiya, Shoichi Kawase 1991-11-26
5049365 Process for treating air containing hydrocarbon vapor with a composite adsorbent material Seiji Okabayashi, Kiyoshi Abe, Masahide Ogawa 1991-09-17
5028823 Delay device with intermittent capacitor discharge 1991-07-02
4963519 Composite adsorbent Seiji Okabayashi, Kiyoshi Abe, Masahide Ogawa 1990-10-16
4945299 Control apparatus for an a.c. generator for automobile 1990-07-31
4914374 Voltage regulator for AC generator with constant interruption frequency Shiro Iwatani 1990-04-03