Dreifert; Thomas
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dreifert; Thomas.The latest application filed is for "dual or multi-shaft vacuum pump".
- Dreifert; Thomas - Kerpen DE
- Dreifert; Thomas - Koln DE
- Dreifert, Thomas - K?uuml;ln DE
| Patent | Date |
|---|---|
| Screw vacuum pump without internal cooling Grant 11,300,123 - Dreifert , et al. April 12, 2 | 2022-04-12 |
| Vacuum pump screw rotors with symmetrical profiles on low pitch sections Grant 11,293,435 - Dreifert , et al. April 5, 2 | 2022-04-05 |
| Dual Or Multi-shaft Vacuum Pump App 20210270270 - Schiller; Dirk ; et al. | 2021-09-02 |
| Multi-stage Rotary Piston Pump App 20210140430 - DREIFERT; Thomas ; et al. | 2021-05-13 |
| Compressor App 20200362861 - DREIFERT; Thomas ; et al. | 2020-11-19 |
| Screw Rotor App 20200325897 - DREIFERT; Thomas ; et al. | 2020-10-15 |
| Vacuum pump system Grant 10,465,686 - Dreifert , et al. No | 2019-11-05 |
| Vacuum-pump Rotor App 20190264686 - Dreifert; Thomas ; et al. | 2019-08-29 |
| Vacuum Pump Screw Rotor App 20190211822 - Dreifert; Thomas ; et al. | 2019-07-11 |
| Screw-type Vacuum Pump App 20190203711 - DREIFERT; Thomas ; et al. | 2019-07-04 |
| Dry-compressing Vacuum Pump App 20190186493 - Dreifert; Thomas ; et al. | 2019-06-20 |
| Pump System App 20180202445 - Dreifert; Thomas ; et al. | 2018-07-19 |
| Vacuum Pump System App 20180112666 - Dreifert; Thomas ; et al. | 2018-04-26 |
| Vacuum Pump System App 20170122319 - Dreifert; Thomas ; et al. | 2017-05-04 |
| Roots pump connection channels separating adjacent pump stages Grant 9,476,423 - Birch , et al. October 25, 2 | 2016-10-25 |
| Vacuum pump Grant 9,234,519 - Dreifert , et al. January 12, 2 | 2016-01-12 |
| Roots Pump App 20140205483 - Birch; Peter ; et al. | 2014-07-24 |
| Vacuum Pump App 20120315165 - Dreifert; Thomas ; et al. | 2012-12-13 |
| Vacuum Pump System App 20120189478 - Dreifert; Thomas ; et al. | 2012-07-26 |
| Vacuum Pump Housing And Set Of Cooling Elements For A Vaccum Pump Housing App 20120034110 - Dreifert; Thomas ; et al. | 2012-02-09 |
| Vacuum pump Grant D630,229 - Dreifert January 4, 2 | 2011-01-04 |
| Vacuum pump Grant D617,814 - Dreifert June 15, 2 | 2010-06-15 |
| Method For Reacting Self-igniting Dusts In A Vacuum Pump Device App 20100086883 - Zollig; Uwe ; et al. | 2010-04-08 |
| Vacuum Pump App 20090148284 - Dreifert; Thomas ; et al. | 2009-06-11 |
| Shaft Seal App 20090140495 - Dreifert; Thomas ; et al. | 2009-06-04 |
| Eccentric pump and method for operation of said pump Grant 7,186,098 - Dreifert March 6, 2 | 2007-03-06 |
| Vacuum pump Grant 7,153,093 - Dreifert , et al. December 26, 2 | 2006-12-26 |
| Two shaft vacuum pump with cantilevered rotors Grant 6,964,559 - Behling , et al. November 15, 2 | 2005-11-15 |
| Eccentric pump and method for operation of said pump App 20050163632 - Dreifert, Thomas | 2005-07-28 |
| Vacuum pump App 20050147517 - Dreifert, Thomas ; et al. | 2005-07-07 |
| Two-shaft vacuum pump Grant 6,863,511 - Kriehn , et al. March 8, 2 | 2005-03-08 |
| Dry compressing vacuum pump having a gas ballast device Grant 6,776,588 - Arndt , et al. August 17, 2 | 2004-08-17 |
| Two-shaft vacuum pump App 20040091380 - Kriehn, Hartmut ; et al. | 2004-05-13 |
| Screw vacuum pump comprising additional flow bodies App 20040067149 - Giebmanns, Wolfgang ; et al. | 2004-04-08 |
| Vacuum pump with two co-operating rotors App 20030152468 - Behling, Manfred ; et al. | 2003-08-14 |
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