Keefer; Richard M.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Keefer; Richard M..The latest application filed is for "microwave packaging structures".

Company Profile

0.9.0

Keefer; Richard M. - Omemee Ontario CA
Keefer; Richard M. - Peterborough CA
Keefer; Richard M. - Peterborouth CA

*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
Microwave packaging structures Grant 5,910,268 - Keefer June 8, 1	1999-06-08
Smart microwave packaging structures Grant 5,864,123 - Keefer January 26, 1	1999-01-26
Methods and devices used in the microwave heating of foods and other materials Grant 5,519,195 - Keefer , et al. May 21, 1	1996-05-21
Susceptors for microwave heating and systems and methods of use Grant 5,079,397 - Keefer January 7, 1	1992-01-07
Microwave container and method of making same Grant 4,866,234 - Keefer September 12, 1	1989-09-12
Package of material for microwave heating including container with stepped structure Grant 4,831,224 - Keefer May 16, 1	1989-05-16
Container for microwave heating including means for modifying microwave heating distribution, and method of using same Grant 4,814,568 - Keefer March 21, 1	1989-03-21
Systems and methods for determining doneness of microwave-heated bodies Grant 4,786,773 - Keefer November 22, 1	1988-11-22
Microwave heating package and method Grant 4,656,325 - Keefer April 7, 1	1987-04-07

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.