Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6767524 | Process to produce nearly oil free compressed ammonia and system to implement it | Jean-Louis Picouet | 2004-07-27 |
| 6106241 | Single screw compressor with liquid lock preventing slide | — | 2000-08-22 |
| 5890884 | Screw-type compressor with liquid lock protection | — | 1999-04-06 |
| 5195331 | Method of using a thermal expansion valve device, evaporator and flow control means assembly and refrigerating machine | Jean-Louis Picouet | 1993-03-23 |
| 5087182 | Casing construction for screw compression/expansion machines | Jean-Louis Picouet | 1992-02-11 |
| 5084965 | Process to cut hour glass screws | — | 1992-02-04 |
| 5080568 | Positive displacement rotary machine | — | 1992-01-14 |
| 4968231 | Oil-free rotary compressor with injected water and dissolved borate | Ernest Kallmann | 1990-11-06 |
| 4903497 | Methods and devices for cooling a motor of a refrigerating machine with liquid and economizer gas | Joseph Layton Knopp | 1990-02-27 |
| 4900239 | Method and a screw machine for processing fluid under high pressures, with liquid injection between a sealing portion and a support portion of the gate-rotor | — | 1990-02-13 |
| 4890461 | Hermetic or semi-hermetic refrigeration motor-compressor unit | — | 1990-01-02 |
| 4890989 | Positive displacement machine with a plastic gate pinton | — | 1990-01-02 |
| 4861246 | Injected compressor with liquid switch | — | 1989-08-29 |
| 4691533 | Refrigeration system with a centrifugal economizer | — | 1987-09-08 |
| 4589826 | Method of lubricating bearings of a machine handling liquefiable gas | Sadafumi Noda | 1986-05-20 |
| 4579513 | Positive displacement screw machine with separation wall attached to slide valve | Luc Langouet | 1986-04-01 |
| 4571166 | Control slide for a screw volumetric machine and a machine equipped therewith | — | 1986-02-18 |
| 4569640 | Device for high pressure compression | — | 1986-02-11 |
| 4553399 | Method of lubricating bearings of a refrigeration or the like compressor | Sadafumi Noda | 1985-11-19 |
| 4534719 | Volumetric screw-and-pinion machine and a method for using the same | — | 1985-08-13 |
| 4509341 | Economizer device for a refrigerating machine, a heat-pump or the like | — | 1985-04-09 |
| 4492542 | Global worm machine with seizure-preventing cells | — | 1985-01-08 |
| 4475877 | Globoid worm machine with metal ring in bearing housing | — | 1984-10-09 |
| 4470781 | Positive displacement meshing screw machine | — | 1984-09-11 |
| 4470777 | Volumetric machine with screw and pinion-wheels | — | 1984-09-11 |