Griffiths; Clifford H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Griffiths; Clifford H..The latest application filed is for "method for obtaining improved image contrast in migration imaging members".
- Griffiths; Clifford H. - Pittsford NY
- Griffiths; Clifford H. - Penfield NY
- Griffiths; Clifford H. - Brighton NY
- Griffiths; Clifford H. - Rochester NY
| Patent | Date |
|---|---|
| Method for obtaining improved image contrast in migration imaging members Grant 5,514,505 - Limburg , et al. May 7, 1 | 1996-05-07 |
| Process for suppressing the plywood effect in photosensitive imaging members Grant 5,069,758 - Herbert , et al. December 3, 1 | 1991-12-03 |
| Process for fabricating a belt Grant 4,747,992 - Sypula , et al. May 31, 1 | 1988-05-31 |
| Multi-layered ambipolar photoresponsive devices for electrophotography Grant 4,410,616 - Griffiths , et al. October 18, 1 | 1983-10-18 |
| Method for the preparation of x-form metal free phthalocyamine Grant 4,098,795 - Griffiths , et al. July 4, 1 | 1978-07-04 |
| Method for the preparation of X-form metal phthalocyanine and X-form metal free compounds Grant 4,031,109 - Griffiths , et al. June 21, 1 | 1977-06-21 |
| Direct alpha to X phase conversion of metal-free phthalocyanine Grant 3,932,180 - Griffiths , et al. January 13, 1 | 1976-01-13 |
| Computer Memory Device Grant 3,801,824 - Eastwood , et al. April 2, 1 | 1974-04-02 |
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.
| 