Seyfert; Wilfried
Patent Applications and Registrations
Patent applications and USPTO patent grants for Seyfert; Wilfried.The latest application filed is for "process for preparing methylenedianiline and methylenebis (phenylisocyanate)".
- Seyfert; Wilfried - Kapellen BE
- Seyfert; Wilfried - Weisenheim DE
| Patent | Date |
|---|---|
| Process for preparing methylenedianiline and methylenebis (phenylisocyanate) Grant 7,230,130 - Strofer , et al. June 12, 2 | 2007-06-12 |
| Process for preparing methylenedianiline and methylenebis (phenylisocyanate) App 20050014975 - Strofer, Eckhard ; et al. | 2005-01-20 |
| Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) Grant 6,831,192 - Strofer , et al. December 14, 2 | 2004-12-14 |
| Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) App 20020132953 - Strofer, Eckhard ; et al. | 2002-09-19 |
| Method for the production of methylenedi(phenylamine and methylenedi(phenyl isocyanate) Grant 6,433,219 - Strofer , et al. August 13, 2 | 2002-08-13 |
| Purification of carboxylic esters which contain aldehydes, acetals and/or unsaturated compounds Grant 4,946,029 - Frank , et al. August 7, 1 | 1990-08-07 |
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.
| 