Location History:
- Grafton, VA (US) (1977 - 1990)
- Yorktown, VA (US) (1983 - 1992)
Company Filing History:
5 out of 2,546 
1 out of 3,975 
Years Active: 1977-1992
Title: The Innovations of Donald J Progar
Introduction
Donald J Progar is a notable inventor based in Grafton, VA (US). He has made significant contributions to the field of polymer chemistry, particularly in the development of advanced polyimide materials. With a total of 6 patents to his name, Progar's work has had a lasting impact on various industries.
Latest Patents
Progar's latest patents include innovative formulations such as polyimide molding powder, coating, adhesive, and matrix resin. This novel polyimide is prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA) in 2-methoxyethyl ether (diglyme). The polymer is available in both ultra high molecular weight and controlled molecular weight forms, which significantly enhance its processing capabilities for moldings, adhesive bonding, and composite fabrication. The higher molecular weight version results in tougher films and coatings, making it highly versatile. Another significant patent involves a high-temperature polyimide composition created by reacting 4,4'-isophthaloyldiphthalic anhydride with metaphenylenediamine, which is utilized for matrix resins, adhesives, films, coatings, moldings, and laminates.
Career Highlights
Throughout his career, Progar has worked with various organizations, including the United States of America as represented by the Administrator and the United States of America as represented by the United States. His innovative work has positioned him as a key figure in the development of advanced materials.
Collaborations
Progar has collaborated with notable individuals in his field, including Terry L St Clair and Vernon L Bell. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.
Conclusion
Donald J Progar's contributions to polymer chemistry and his innovative patents have established him as a prominent inventor in his field. His work continues to influence the development of advanced materials and applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.