Darwin; David Charles
Patent Applications and Registrations
Patent applications and USPTO patent grants for Darwin; David Charles.The latest application filed is for "emulsified comb polymer and defoaming agent composition and method of making same".
- Darwin; David Charles - Columbia MA
| Patent | Date |
|---|---|
| Emulsified comb polymer and defoaming agent composition and method of making same Grant 6,139,623 - Darwin , et al. October 31, 2 | 2000-10-31 |
| High early-strength-enhancing admixture for precast hydraulic cement and compositions containing same Grant 5,840,114 - Jeknavorian , et al. November 24, 1 | 1998-11-24 |
| Cement and cement composition having improved rheological properties Grant 5,753,744 - Darwin , et al. May 19, 1 | 1998-05-19 |
| Cement admixture product having improved rheological properties and process of forming same Grant 5,728,207 - Arfaei , et al. March 17, 1 | 1998-03-17 |
| Cement admixture product Grant 5,725,657 - Darwin , et al. March 10, 1 | 1998-03-10 |
| Cement admixture product Grant 5,665,158 - Darwin , et al. September 9, 1 | 1997-09-09 |
| Cement admixture product having improved rheological properties and process of forming same Grant 5,643,978 - Darwin , et al. July 1, 1 | 1997-07-01 |
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.
| 