Dowdeswell; Stephen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dowdeswell; Stephen.The latest application filed is for "multi-stage turbomolecular pump".
- Dowdeswell; Stephen - Cuckfield GB
- Dowdeswell; Stephen - Burgess Hill Sussex
- Dowdeswell; Stephen - Warninglid GB
- Dowdeswell; Stephen - West Sussex GB
| Patent | Date |
|---|---|
| Twin shaft pumps and a method of pumping Grant 11,401,935 - Schofield , et al. August 2, 2 | 2022-08-02 |
| Multi-stage Turbomolecular Pump App 20220049705 - Schofield; Nigel Paul ; et al. | 2022-02-17 |
| Temperature Control Of A Pumped Gas Flow App 20200173444 - Foote; William ; et al. | 2020-06-04 |
| Twin Shaft Pumps And A Method Of Pumping App 20200102958 - Schofield; Nigel Paul ; et al. | 2020-04-02 |
| Gas transfer vacuum pump Grant 10,337,517 - Schofield , et al. | 2019-07-02 |
| Vacuum pump rotor for a vacuum pump having a roots pumping mechanism Grant 9,920,761 - Schofield , et al. March 20, 2 | 2018-03-20 |
| Vacuum pump with longitudinal and annular seals Grant 9,551,333 - Turner , et al. January 24, 2 | 2017-01-24 |
| Rotor For Pump App 20160097390 - Schofield; Nigel Paul ; et al. | 2016-04-07 |
| Multi stage, clam shell vacuum pump Grant 9,279,426 - Schofield , et al. March 8, 2 | 2016-03-08 |
| Vacuum Pump App 20150377239 - Schofield; Nigel Paul ; et al. | 2015-12-31 |
| Gas Transfer Vacuum Pump App 20150037137 - Schofield; Nigel Paul ; et al. | 2015-02-05 |
| Rotor For Pump App 20140079581 - Schofield; Nigel Paul ; et al. | 2014-03-20 |
| Vacuum Pump With Longitudinal And Annular Seals App 20140017062 - Turner; Neil ; et al. | 2014-01-16 |
| Roots pumps Grant 8,500,425 - Schofield , et al. August 6, 2 | 2013-08-06 |
| Vacuum pump Grant 8,500,422 - Dowdeswell , et al. August 6, 2 | 2013-08-06 |
| Multi Stage, Clam Shell Vacuum Pump App 20100226808 - Schofield; Nigel Paul ; et al. | 2010-09-09 |
| Vacuum Pump App 20100119399 - Dowdeswell; Stephen ; et al. | 2010-05-13 |
| Vacuum Pump App 20070274822 - Liu; Michael Chung Kau ; et al. | 2007-11-29 |
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