Siegfried; Robert W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Siegfried; Robert W..The latest application filed is for "polyester-based suncreen formulations".
- Siegfried; Robert W. - Medford NJ
- Siegfried; Robert W. - Kansas City MO
- Siegfried; Robert W. - Frisco TX
| Patent | Date |
|---|---|
| Polyester-based suncreen formulations Grant 5,833,961 - Siegfried , et al. November 10, 1 | 1998-11-10 |
| Dry sunscreen composition Grant 5,445,815 - Siegfried August 29, 1 | 1995-08-29 |
| Apparatus and method for investigating wellbores and the like Grant 4,867,264 - Siegfried * September 19, 1 | 1989-09-19 |
| Ultrasonic surface texture measurement apparatus and method Grant 4,646,565 - Siegfried March 3, 1 | 1987-03-03 |
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