| Patents for F04F 9 - Diffusion pumps (148) | |
|---|---|
| 11/1993 | |
| 11/24/1993 | CN2147380Y Low oil return convex cavity type oil diffuse pump |
| 10/1993 | |
| 10/06/1993 | EP0563465A2 Process and apparatus for generating a vacuum |
| 09/1993 | |
| 09/02/1993 | WO1993017244A1 Jet-type vacuum pump |
| 09/02/1993 | WO1993017243A1 Jet-type vacuum pump |
| 09/02/1993 | WO1993017242A1 Jet-type vacuum pump |
| 08/1993 | |
| 08/04/1993 | CN1074982A 射流真空泵 Jet pumps |
| 08/04/1993 | CN1074981A Jet vacuum pump |
| 08/04/1993 | CN1074980A 射流真空泵 Jet pumps |
| 11/1992 | |
| 11/24/1992 | CA1310765C Counterflow leak detector with high and low sensitivity operating modes |
| 08/1992 | |
| 08/19/1992 | EP0476157A4 Vapour-jet vacuum pump |
| 08/19/1992 | CN2113372U High vacuum oil diffusion pump |
| 08/11/1992 | US5137429 Diffusion pump |
| 03/1992 | |
| 03/25/1992 | EP0476157A1 Vapour-jet vacuum pump |
| 01/1992 | |
| 01/09/1992 | WO1992000459A1 Diffusion pump |
| 01/01/1992 | CN2091981U Flow-phase thermodynamic pump for chromatography |
| 09/1991 | |
| 09/19/1991 | WO1991014102A1 Vapour-jet vacuum pump |
| 05/1991 | |
| 05/08/1991 | EP0347452A4 Counterflow leak detector with high and low sensitivity operating modes |
| 03/1991 | |
| 03/21/1991 | WO1991003650A1 Diffusion pump |
| 10/1990 | |
| 10/10/1990 | EP0391601A2 Flying generator |
| 01/1990 | |
| 01/31/1990 | CN2052081U Nozzle of jet system for diffusion pump |
| 12/1989 | |
| 12/27/1989 | EP0347452A1 Counterflow leak detector with high and low sensitivity operating modes. |
| 12/12/1989 | US4886048 Hydrogen pump |
| 07/1989 | |
| 07/04/1989 | US4845360 Counterflow leak detector with high and low sensitivity operating modes |
| 06/1989 | |
| 06/15/1989 | WO1989005514A1 Counterflow leak detector with high and low sensitivity operating modes |
| 04/1989 | |
| 04/12/1989 | CN1032382A Novel rapid vacuum-pumping method |
| 10/1988 | |
| 10/12/1988 | EP0286281A1 Hydrogen pump for vacuum insulation jackets |
| 09/1986 | |
| 09/09/1986 | US4610603 Protective control system for diffusion pump |
| 01/1986 | |
| 01/28/1986 | US4566861 Method of and apparatus for operating a diffusion pump |
| 05/1985 | |
| 05/28/1985 | US4519749 Wind-solar lift pump |
| 03/1983 | |
| 03/15/1983 | US4376616 Diffusion pump |
| 02/1983 | |
| 02/15/1983 | US4373868 Diffusion pump for leak detector |
| 08/1982 | |
| 08/11/1982 | EP0015976B1 Electric heater assembly for diffusion pumps |
| 03/1982 | |
| 03/16/1982 | CA1120024A1 Vapor booster fluids |
| 02/1981 | |
| 02/17/1981 | US4251713 Electric heater assembly for diffusion pumps |
| 05/1980 | |
| 05/06/1980 | US4201629 Fluid refining apparatus |
| 04/1980 | |
| 04/15/1980 | US4198190 Vapor booster fluids |
| 03/1980 | |
| 03/04/1980 | US4191512 Apparatus and method for controlling pressure ratio in high vacuum vapor pumps |
| 11/1979 | |
| 11/15/1979 | WO1979000957A1 Electric heater assembly for diffusion pumps |
| 10/1979 | |
| 10/30/1979 | US4172477 Generation of high vacuums |
| 10/09/1979 | US4170522 Fluid refining method |
| 02/1979 | |
| 02/20/1979 | US4140438 Diffusion pump |
| 11/1978 | |
| 11/28/1978 | CA1043286A1 Self-cleansing diffusion pump |
| 08/1978 | |
| 08/22/1978 | US4108576 Low cost, thermally efficient diffusion pump |
| 04/1978 | |
| 04/25/1978 | US4086031 Vapor diffusion pump |
| 03/1978 | |
| 03/28/1978 | US4081222 Combined vacuum baffle and valve for diffusion pump |
| 01/1978 | |
| 01/31/1978 | US4071058 Pumping unit for television tubes |
| 03/1976 | |
| 03/09/1976 | US3943330 Method and apparatus for electrically heating a fluid |
| 03/02/1976 | US3941512 Ventilating arrangement for steam flow vacuum pump |
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