Location History:
- Cupertino, CA (US) (1981 - 1985)
- Menlo Park, CA (US) (1987 - 1991)
Company Filing History:
4 out of 1,322 
3 out of 7 
2 out of 18 
Years Active: 1981-1991
Title: The Innovative Contributions of Donald W. Penhale
Introduction
Donald W. Penhale is a notable inventor based in Menlo Park, California. He has made significant contributions to the field of biodegradable polymers, holding a total of 10 patents. His work focuses on creating sustainable materials that have practical applications in various industries.
Latest Patents
Among his latest patents, Penhale has developed biodegradable ortho ester polymers based on mono- and poly-thiols. These polymers are designed for use in biodegradable sustained release agent dispensers. They contain specific mer units that include quadrivalent organic groupings and various hydrocarbyl or oxyhydrocarbyl components. Additionally, he has patented biodegradable polymers that incorporate acetal, carboxy-acetal, ortho ester, and carboxy-ortho ester linkages, further enhancing the functionality of sustainable materials.
Career Highlights
Throughout his career, Penhale has worked with esteemed organizations such as SRI International and Pharmaceutical Delivery Systems, Inc. His innovative work has positioned him as a leader in the development of biodegradable materials, contributing to advancements in environmental sustainability.
Collaborations
Some of his notable coworkers include Jorge Heller and Steve Y. Ng. Their collaborative efforts have further propelled the research and development of biodegradable polymers.
Conclusion
Donald W. Penhale's contributions to the field of biodegradable polymers exemplify his commitment to innovation and sustainability. His patents and collaborations reflect a dedication to creating environmentally friendly solutions that benefit various industries.
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.