El-Sayed; Lyla M.

Patent Applications and Registrations

Patent applications and USPTO patent grants for El-Sayed; Lyla M..The latest application filed is for "salts of acid-containing ab diblock copolymers as charge directors for positive-working electrostatic liquid developers".

Company Profile

0.10.0

El-Sayed; Lyla M. - West Chester PA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Salts of acid-containing AB diblock copolymers as charge directors for positive-working electrostatic liquid developers Grant 5,130,221 - El-Sayed , et al. July 14, 1	1992-07-14
Acid-containing A-B block copolymers as grinding aids in liquid electrostatic developer preparation Grant 5,053,306 - El-Sayed , et al. October 1, 1	1991-10-01
Bipolar liquid electrostatic developer Grant 4,985,329 - El-Sayed , et al. January 15, 1	1991-01-15
Alkylhydroxy benzylpolyamine as adjuvant for electrostatic liquid developers Grant 4,977,056 - El-Sayed December 11, 1	1990-12-11
Monofunctional amines as adjuvant for liquid electrostatic developers Grant 4,935,328 - El-Sayed , et al. June 19, 1	1990-06-19
Modified liquid electrostatic developer having improved image scratch resistance Grant 4,820,605 - El-Sayed April 11, 1	1989-04-11
Liquid electrostatic developers containing modified resin particles Grant 4,798,778 - January 17, 1	1989-01-17
Quaternaryammonium hydroxide as adjuvant for liquid electrostatic developers Grant 4,783,388 - El-Sayed , et al. November 8, 1	1988-11-08
Inorganic metal salt as adjuvant for negative liquid electrostatic developers Grant 4,780,389 - El-Sayed October 25, 1	1988-10-25
Polybutylene succinimide as adjuvant for electrostatic liquid developer Grant 4,702,984 - El-Sayed , et al. October 27, 1	1987-10-27

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.