Hiroshi Kawai

Hiroshi Kawai

KC Kuraray Co.: 26 patents #17 of 1,827Top 1%

MC Murata Manufacturing Co.: 11 patents #708 of 5,295Top 15%

TO Toyota: 9 patents #3,216 of 26,838Top 15%

PA Panasonic: 6 patents #4,438 of 21,108Top 25%

Fujitsu Limited: 3 patents #8,614 of 24,456Top 40%

MK Murata Kikai: 3 patents #126 of 454Top 30%

JS Jsr: 3 patents #346 of 1,137Top 35%

SO Sony: 3 patents #10,744 of 25,231Top 45%

AN Ansei: 2 patents #7 of 16Top 45%

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%

KC Kumi Kasei Co.: 2 patents #1 of 17Top 6%

NC Nippon Light Metal Company: 1 patents #203 of 499Top 45%

TC Tsuda Kogyo Co.: 1 patents #10 of 17Top 60%

DC Daiwa Seiko Co.: 1 patents #129 of 217Top 60%

AC Aisin Ai Co.: 1 patents #52 of 119Top 45%

IC Inc Square, Co.: 1 patents #321 of 546Top 60%

IC Ishizuka Glass Co.: 1 patents #3 of 22Top 15%

KS Kobe Steel: 1 patents #857 of 2,031Top 45%

Kubota: 1 patents #1,212 of 2,059Top 60%

Bridgestone: 1 patents #1,586 of 2,860Top 60%

Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%

MI Mitutoyo: 1 patents #455 of 721Top 65%

📍 Chita, HI: #1 of 1 inventorsTop 100%

Overall (All Time): #22,619 of 4,157,543Top 1%

Issued Patents All Time

Showing 76–80 of 80 patents

Patent #	Title	Co-Inventors	Date
4671337	Forced cooling casting apparatus	Yukio Otsuka	1987-06-09
4671338	Forced cooling casting apparatus	Yukio Otsuka, Kiyomi Iida, Hironobu Nakano	1987-06-09
4644996	Inclining molten metal charging apparatus for forced cooling casting	Yukio Ohtsuka, Kuniaki Mizuno	1987-02-24
4585047	Apparatus for cooling molten metal in a mold	Yukio Ootsuka	1986-04-29
4416427	Spinning reel for fishing	—	1983-11-22