Hokuetsu Kogyo Co., Ltd.
5Patents
0Active
5Granted
25Portfolio score
Filing activity: Dec 19, 1973 → Sep 4, 1975
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4025244A | Rotary compressor of liquid-cooled type provided with means for adjusting amount of liquid and volume of gas | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US4035114A | Method for reducing power consumption in a liquid-cooled rotary compressor by treating the liquid | Emerging Cross-Sectional Technologies | 19 | Expired |
| US3945464A | Oil-injection-type rotary compressor having a centrifugal water separator | Emerging Cross-Sectional Technologies | 16 | Expired |
| US3936249A | Rotary compressor of oil cooling type with appropriate oil discharge circuit | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4036567A | Globoid worm type rotary machine | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.