YI

Yasuhiko Ishida

Mitsubishi Electric: 16 patents #1,485 of 25,717Top 6%
Canon: 14 patents #4,747 of 19,416Top 25%
TO Toyota: 14 patents #1,948 of 26,838Top 8%
TW The Japan Steel Works: 9 patents #11 of 643Top 2%
NS Nippon Soken: 4 patents #322 of 1,540Top 25%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
YM Yamaha Marine: 2 patents #49 of 137Top 40%
MK Mitsubishi Denki K.K.: 2 patents #70 of 577Top 15%
NC Nippondenso Co.: 1 patents #1,765 of 3,479Top 55%
YI Yoshitomi Pharmaceutical Industries: 1 patents #145 of 310Top 50%
Overall (All Time): #37,368 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 51–61 of 61 patents

Patent #TitleCo-InventorsDate
4442820 Exhaust recirculation system for internal combustion engines Toshikazu Ina, Hisasi Kawai, Tokio Kohama, Akira Nishimatsu, Souichi Matsusita 1984-04-17
4390000 Air-fuel mixture heating device for internal combustion engine Toshihiko Igashira, Ken Nomura, Seiko Abe 1983-06-28
4377148 Fuel mixture heating device of an internal combustion engine 1983-03-22
4361125 Fuel evaporator for internal combustion engine Toshihiko Igashira, Ken Nomura, Seiko Abe 1982-11-30
4257371 Split operation type multi-cylinder internal combustion engine 1981-03-24
4241704 Intake system of an internal combustion engine 1980-12-30
4231329 Apparatus for atomizing fuel in an internal combustion engine 1980-11-04
4204514 Split operation type multi-cylinder internal combustion engine 1980-05-27
4200083 Split operation type multi-cylinder internal combustion engine 1980-04-29
4198940 Split operation type multi-cylinder internal combustion engine 1980-04-22
4191013 Device for purifying exhaust gases from internal combustion engine Eturou Katahira, Shunzo Yamaguchi, Masashi Kida, Hideo Miyagi 1980-03-04