This inventor holds 35 USPTO granted patents and 6 published patent applications, plus 18 CIPO patents and 10 EPO patents, primarily in Dental Compositions. Top assignees: Dentsply Research & Development Corp., Dentsply International Inc., Ceramco Inc.. Active years: 1987-2018.
Location History:
- Dover, DE (US) (1987 - 1993)
- Stuart, FL (US) (1996)
- Lewes, DE (US) (2013 - 2015)
- Wyoming, DE (US) (1994 - 2018)
Company Filing History:
23 out of 217 
10 out of 210 
1 out of 6 
Years Active: 1987-2018
Areas of Expertise:
Title: Paul D Hammesfahr: Innovations in Photopolymerizable Compositions
Introduction:
Paul D Hammesfahr, a renowned inventor in the field of photopolymerizable compositions, has made significant contributions to improving color stability and reducing polymerization stress. With a total of 35 patents to his name, Hammesfahr's expertise and innovative approach have propelled him to the forefront of the industry. This article will delve into his latest patents, career highlights, collaborations, and the impact of his work on the field.
Latest Patents:
Hammesfahr's latest patents revolve around the development of photopolymerization accelerator compositions that enhance color stability and control polymerization shrinkage stress in cured resin and composite pastes. By introducing a novel tertiary twisted biphenyldiamine compound, Hammesfahr has effectively improved the performance of photopolymerizable compositions. The compound is dynamically compatible with conventional photosensitizers and radically polymerizable monomers, thereby broadening its potential applications across various industries.
Career Highlights:
Hammesfahr's remarkable career spans across several key positions in prestigious companies. Notably, he worked at Dentsply Research & Development Corp. and Dentsply International Inc., two influential organizations in the dental materials industry. Through his roles in research and development, Hammesfahr's groundbreaking solutions have significantly contributed to advancing the field's technological capabilities.
Collaborations:
Hammesfahr's collaborations with fellow inventors have further enriched his contributions. Two notable colleagues he has worked with are Kewang Lu and Xiaoming Jin. These collaborative efforts have allowed for cross-pollination of ideas and the combination of complementary expertise, resulting in more impactful inventions.
Conclusion:
Paul D Hammesfahr's relentless pursuit of innovation in photopolymerizable compositions has shaped the industry and paved the way for enhanced color stability and reduced polymerization stress. With an impressive portfolio of 35 patents, his contributions have not only benefited companies like Dentsply Research & Development Corp. and Dentsply International Inc. but have also opened new possibilities for various applications in the field. Hammesfahr's ongoing collaborations with renowned inventors continue to push the boundaries of what is possible, inspiring advancements and improvements within the industry.