Helms; David A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Helms; David A..The latest application filed is for "determination of the watercut of a multiphase flow directly from measured microwave frequency dielectric properties".
- Helms; David A. - Houston TX
| Patent | Date |
|---|---|
| Determination of the watercut of a multiphase flow directly from measured microwave frequency dielectric properties Grant 5,625,293 - Marrelli , et al. April 29, 1 | 1997-04-29 |
| Determination of water cut and gas-fraction in oil/water/gas streams Grant 5,483,171 - Hatton , et al. January 9, 1 | 1996-01-09 |
| Means and method for analyzing a petroleum stream Grant 5,412,326 - Marrelli , et al. May 2, 1 | 1995-05-02 |
| Dual frequency microwave water cut monitoring means and method Grant 5,014,010 - Helms , et al. May 7, 1 | 1991-05-07 |
| Microwave water cut monitor with temperature controlled test cell Grant 4,977,377 - Durrett , et al. December 11, 1 | 1990-12-11 |
| Microwave water cut monitor Grant 4,947,127 - Helms , et al. August 7, 1 | 1990-08-07 |
| Co-variance microwave water cut monitoring means and method Grant 4,947,128 - Hatton , et al. August 7, 1 | 1990-08-07 |
| Petroleum stream microwave watercut monitor Grant 4,947,129 - Helms , et al. August 7, 1 | 1990-08-07 |
| Petroleum stream monitoring means and method Grant 4,660,414 - Hatton , et al. April 28, 1 | 1987-04-28 |
| Water cut monitoring means and method Grant 4,499,418 - Helms , et al. February 12, 1 | 1985-02-12 |
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.
| 