YI

Yutaka Ishizuka

DC Diesel Kiki Co.: 23 patents #3 of 366Top 1%
SS Sankyo Seiki Seisakusho: 15 patents #3 of 287Top 2%
Robert Bosch Gmbh: 2 patents #7,316 of 19,740Top 40%
SC Sankyo Seiki Mfg. Co.: 2 patents #61 of 244Top 25%
TC Toshiba Ceramics Co.: 2 patents #107 of 458Top 25%
OC Odawara Engineering Co.: 1 patents #10 of 25Top 40%
Overall (All Time): #65,193 of 4,157,543Top 2%
45
Patents All Time

Issued Patents All Time

Showing 26–45 of 45 patents

Patent #TitleCo-InventorsDate
4717321 Vane compressor with vane back pressure adjustment Tsunenori Shibuya, Haruhiko Takada, Teruo Nakamura, Hidehiko Takayama 1988-01-05
4668172 Compressor having discharge valve means adapted to enhance the coefficient of performance of the compressor Tsunenori Shibuya 1987-05-26
4636153 Rotary compressor with blind hole in end wall that aligns with back pressure chamber Teruo Nakamura 1987-01-13
4611977 Vane compressor with vane back pressure adjustment Tsunenori Shibuya, Haruhiko Takada, Teruo Nakamura, Hidehiko Takayama 1986-09-16
4571164 Vane compressor with vane back pressure adjustment Tsunenori Shibuya, Haruhiko Takada, Teruo Nakamura, Hidehiko Takayama 1986-02-18
4549855 Compression capacity control apparatus for swash plate compressor Tsunenori Shibuya 1985-10-29
4511313 Compression capacity control apparatus for swash plate compressor Tsunenori Shibuya 1985-04-16
4502854 Vane compressor having rearwardly located suction connector and discharge connector Tsunenori Shibuya, Teruo Nakamura 1985-03-05
4501537 Vane compressor having an endless camming surface minimizing torque fluctuations 1985-02-26
4480965 Capacity modulation device for compressor 1984-11-06
4480973 Vane compressor provided with endless camming surface minimizing torque fluctuations 1984-11-06
4416190 Seal for compressor 1983-11-22
4401414 Swash-plate type compressor having a simple lubricant oil feeding arrangement 1983-08-30
4394110 Swash-plate type compressor 1983-07-19
4392416 Swash-plate type compressor having low noise thrust bearings 1983-07-12
4379425 Double-acting piston for swash-plate type compressors 1983-04-12
4329129 Vaned rotor for rotary mechanisms with bearings in vane slots Shinichi Kobayashi 1982-05-11
4253809 Vane compressor with rotor having metallic base and vane slots and a periphery of lower specific gravity Shinichi Kobayashi 1981-03-03
4244680 Rotary vane compressor with oil separating means Shinichi Kobayashi 1981-01-13
4242065 Sliding vane compressor with end face inserts or rotor Shinichi Kobayashi 1980-12-30