Weigel; David C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Weigel; David C..The latest application filed is for "laser write process for making a conductive metal circuit".
- Weigel; David C. - White Bear Lake MN
| Patent | Date |
|---|---|
| Laser write process for making a conductive metal circuit Grant 5,576,074 - Weigel , et al. November 19, 1 | 1996-11-19 |
| Thermal development accelerators for thermographic materials Grant 5,275,932 - Weigel , et al. January 4, 1 | 1994-01-04 |
| Positive imaging diffusion - transfer dry silver system Grant 5,206,112 - Cotner , et al. April 27, 1 | 1993-04-27 |
| Dry silver systems with fluoran leuco dyes Grant 5,185,231 - Weigel February 9, 1 | 1993-02-09 |
| Color photothermographic elements Grant 4,923,792 - Grieve , et al. May 8, 1 | 1990-05-08 |
| Color photothermographic elements Grant 4,883,747 - Grieve , et al. November 28, 1 | 1989-11-28 |
| Photothermographic stabilizers for syringaldazine leuco dyes Grant 4,587,211 - Ishida , et al. May 6, 1 | 1986-05-06 |
| Photothermographic toners Grant 4,585,734 - Weigel April 29, 1 | 1986-04-29 |
| Indicator material Grant 4,328,181 - Anders , et al. May 4, 1 | 1982-05-04 |
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.
| 