Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471498 | Fluid machinery having stepped spirals with axial pushing means for the moving spiral | Hirotsugu Sakata | 2002-10-29 |
| 6338617 | Helical-blade fluid machine | Hirotsugu Sakata, Akira Morishima, Masao Ozu | 2002-01-15 |
| 6186759 | Helical blade type compressor and a refrigeration cycle apparatus using the same | Hirotsugu Sakata, Akira Morishima | 2001-02-13 |
| 6162035 | Helical-blade fluid machine | Hirotsugu Sakata, Akira Morishima, Masao Ozu | 2000-12-19 |
| 5350280 | Fluid compressor | Toshiya Yajima, Takuya Hirayama, Hirotsugu Sakata, Masayuki Okuda, Naoya Morozumi +2 more | 1994-09-27 |
| 5171141 | Scroll compressor with distal ends of the wraps having sliding contact on curved portions | Naoya Morozumi, Tsugio Itami, Hirotsugu Sakata, Toshiya Yajima, Teruo Kobuna | 1992-12-15 |
| 5152682 | Scroll type fluid machine with passageway for innermost working chamber | Naoya Morozumi, Tsugio Itami, Hirotsugu Sakata, Toshiya Yajima, Masayuki Okuda +1 more | 1992-10-06 |
| 5062778 | Helical blade type compressor with thrust loss compensation | Hitoshi Hattori, Hirotsugu Sakata, Masayuki Okuda, Naoya Morozumi | 1991-11-05 |
| 5026264 | Fluid compressor | Naoya Morozumi, Hirotsugu Sakata, Masayuki Okuda, Takayoshi Fujiwara, Moriaki Shimoda +1 more | 1991-06-25 |
| 4875839 | Scroll member for use in a positive displacement device, and a method for manufacturing the same | Hirotsugu Sakata, Hiroaki Murasaki, Hitoshi Hattori, Naoya Morozumi, Kouichi Yoneyama +3 more | 1989-10-24 |
| 4762477 | Scroll compressor with control of lubricant flow | Shigemi Nagatomo, Hirotsugu Sakata, Mitsuo Hatori | 1988-08-09 |
| 4708607 | Scroll compressor with lower and higher pressure chambers acting on the orbiting end plate | Shigemi Nagatomo, Hirotsugu Sakata, Mitsuo Hatori, Hitoshi Hattori | 1987-11-24 |
| 4696630 | Scroll compressor with a thrust reduction mechanism | Hirotsugu Sakata, Shigemi Nagatomo, Mitsuo Hatori | 1987-09-29 |
| 4673339 | Scroll compressor with suction port in stationary end plate | Shigemi Nagatomo, Hirotsugu Sakata, Mitsuo Hatori, Hitoshi Hattori | 1987-06-16 |
| 4645437 | Scroll compressors with annular sealed high pressure thrust producing member | Wataru Sakashita, Tsukasa Chiyoya, Tsutomu Ichikawa | 1987-02-24 |