Kriehn; Hartmut
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kriehn; Hartmut.The latest application filed is for "vacuum pump".
- Kriehn; Hartmut - Koln DE
- Kriehn, Hartmut - Holn DE
- Kriehn, Hartmut - K?ouml;ln DE
| Patent | Date |
|---|---|
| Tempering method for a screw-type vacuum pump Grant 7,232,295 - Kriehn , et al. June 19, 2 | 2007-06-19 |
| Vacuum pump Grant 7,153,093 - Dreifert , et al. December 26, 2 | 2006-12-26 |
| Cooled screw-type vacuum pump Grant 7,056,108 - Behling , et al. June 6, 2 | 2006-06-06 |
| Two shaft vacuum pump with cantilevered rotors Grant 6,964,559 - Behling , et al. November 15, 2 | 2005-11-15 |
| Vacuum pump App 20050147517 - Dreifert, Thomas ; et al. | 2005-07-07 |
| Cooled screw vacuum pump App 20050069446 - Kriehn, Hartmut | 2005-03-31 |
| Two-shaft vacuum pump Grant 6,863,511 - Kriehn , et al. March 8, 2 | 2005-03-08 |
| Tempering method for a screw-type vacuum pump App 20050019169 - Kriehn, Hartmut ; et al. | 2005-01-27 |
| Cooled screw-type vacuum pump App 20040265160 - Behling, Manfred ; et al. | 2004-12-30 |
| Screw vacuum pump with a coolant circuit Grant 6,758,660 - Kriehn , et al. July 6, 2 | 2004-07-06 |
| Two-shaft vacuum pump App 20040091380 - Kriehn, Hartmut ; et al. | 2004-05-13 |
| Vacuum pump with two co-operating rotors App 20030152468 - Behling, Manfred ; et al. | 2003-08-14 |
| Apparatus and process for operating a dry-compression vacuum pump Grant 5,718,565 - Kuhn , et al. February 17, 1 | 1998-02-17 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 