Company Filing History:

5 out of 39

Fritzsche Dodge & Olcott Inc.

patents

Centre National De La Recherche Scientifique

patents

5. 2 out of 832,761

Other

patents

Years Active: 1980-1987

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4689410 - Novel 23-dihydro-oxazolyl steroids (1987-08-25),

2. 4668356 - Photolytic process for the formation of carbon-containing free radicals (1987-05-26),

3. 4621156 - Optical filter agents and photographic products and processes containing (1986-11-04),

4. 4501701 - 20-Isocyano-.DELTA..sup.17(20) -steroids (1985-02-26),

5. 4490296 - Compositions and method (1984-12-25),

6. 4471137 - Highly sterically hindered guanidines and process for the production (1984-09-11),

7. 4468494 - Polymeric pH-sensitive optical filter agents having hydrazone moieties (1984-08-28),

8. 4434080 - Dehydrogenation agents based on derivatives of selenium and their use in (1984-02-28),

9. 4401596 - Novel 17-oxazoline-steroids (1983-08-30),

10. 4370497 - Oxidation process using tellurium oxide catalysts (1983-01-25),

11. 4339593 - Process for the manufacture of 3,6-dialkyl resorcylic acid esters (1982-07-13),

12. 4298676 - Optical filter agents and photographic products and processes containing (1981-11-03),

13. 4269925 - Polymeric optical filter agents and photographic products and processes (1981-05-26),

14. 4267111 - Process for preparing (1981-05-12),

15. 4261866 - Spirodienones and spirocyclic ketones (1981-04-14),

Title: **Derek H Barton: A Pioneer in Chemical Innovations**

Introduction

Derek H Barton, based in Gif-sur-Yvette, France, is an accomplished inventor recognized for his significant contributions to the field of chemistry. With a remarkable portfolio of 18 patents, Barton's innovations have played a crucial role in advancing chemical sciences and medicinal chemistry.

Latest Patents

Among his latest patents, Barton has innovated "Novel 23-dihydro-oxazolyl steroids." This invention presents a unique formula where R₁ is selected from hydrogen and methyl, R₂ from methyl and ethyl, and R₃ and R₄ can be hydrogen or alkyl chains with 1 to 4 carbon atoms. The patent also discusses the A, B, C, and D rings containing various double bonds and the potential for substitution with groups such as hydroxyl, ketones, and halogens. Additionally, he has developed a "Photolytic process for the formation of carbon-containing free radicals," which involves utilizing thermal and photochemical energy to facilitate the formation of diverse carbon radicals, thereby providing valuable insights into organic synthesis.

Career Highlights

Derek H Barton has a commendable career, having worked with esteemed organizations such as Fritzsche Dodge & Olcott Inc. and Roussel Uclaf. His experience in these companies has allowed him to collaborate with leading professionals in the field and further hone his talents as a distinguished inventor.

Collaborations

Throughout his career, Barton has collaborated with notable colleagues like Brian J Willis and William B Motherwell. These partnerships reflect the collaborative spirit in scientific research and innovation, leading to pioneering developments in their respective areas.

Conclusion

Derek H Barton's contributions to chemical innovation and his impressive portfolio of patents illustrate his influence on scientific advancement. His work continues to inspire future inventors in the field, showcasing the importance of creativity and collaboration in achieving groundbreaking discoveries.

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