Denis Billen

Title: The Innovative Contributions of Denis Billen

Introduction

Denis Billen is a notable inventor based in Sandwich, GB, recognized for his significant contributions to the field of chemistry. With a total of 11 patents to his name, he has made remarkable advancements in the preparation of various chemical compounds.

Latest Patents

One of his latest patents is a process for preparing 7H-pyrrolo[2,3-D]pyrimidine compounds. This invention describes improved processes for the preparation of the 7H-pyrrolo[2,3-d]pyrimidine compound, N-methyl-1-{trans-4-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]cyclohexyl}-methanesulfonamide, along with intermediates and veterinary acceptable salts. Another significant patent involves novel crystalline modifications of 1-(5'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoro-methyl)-4,5-dihydroisoxazol-3-yl)-3′H-spiro[azetidine-3,1′-isobenzofuran]-1-yl)-2-(methylsulfonyl)ethanone. This invention also describes compositions and methods for treating parasitic infections in animals, as well as processes for making the crystalline forms.

Career Highlights

Denis Billen has had a distinguished career, working with prominent companies such as Pfizer Corporation and Zoetis Services LLC. His work in these organizations has contributed to the development of innovative solutions in the pharmaceutical and veterinary fields.

Collaborations

Throughout his career, Denis has collaborated with notable colleagues, including David Morris Gethin and Kim Thomas Hall. These partnerships have further enhanced his research and development efforts.

Conclusion

Denis Billen's innovative work and numerous patents reflect his dedication to advancing chemical processes and treatments. His contributions continue to impact the fields of chemistry and veterinary medicine significantly.