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For the Inventor, By the Inventor

Munchenstein, Switzerland

Erich Widmer

USPTO Granted Patents = 19

Average Co-Inventor Count = 2.8

ph-index = 5

Forward Citations = 136(Granted Patents)


Company Filing History:

goldMedal18 out of 4,942 
 
Hoffmann-la Roche Inc.
 patents
silverMedal1 out of 173 
 
Roche Vitamins Inc.
 patents

Years Active: 1976-1999

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19 patents (USPTO):Explore Patents
1. 5919956 - Process for the C.sub.1 -homologization of protected phorenol (1999-07-06),
2. 5750690 - Asymmetric hydrogenation process using ruthenium-diphosphine complexe (1998-05-12),
3. 5540917 - Biomass lipase inhibitor useful for treating adiposity (1996-07-30),
4. 5447953 - Biomasses to treat non-human animals (1995-09-05),
5. 4701540 - Process for carotenoid intermediates (1987-10-20),
6. 4661641 - Substituted alkynes useful as intermediates in the synthesis of (1987-04-28),
7. 4579973 - Process for the manufacture of cyclohexene derivatives (1986-04-01),
8. 4532358 - Process for the manufacture of 3-hydroxy-2,6,6,-trimethyl-2 (1985-07-30),
9. 4465567 - Process for the manufacture of 3-hydroxy-2-cycloalken-1-one derivatives (1984-08-14),
10. 4439015 - Disubstituted ethanes (1984-03-27),
11. 4323711 - Process for producing cyclohexenes (1982-04-06),
12. 4283559 - Process for the manufacture of cyclohexene derivatives (1981-08-11),
13. 4156100 - Optically active cyclohexane derivatives (1979-05-22),
14. 4095038 - Optically active cyclohexane derivatives (1978-06-13),
15. 4072715 - Optically active cyclohexane derivatives (1978-02-07),

Title: The Innovative Mind of Erich Widmer

Introduction

Erich Widmer, an accomplished inventor hailing from Munchenstein, Switzerland, has made significant contributions to the field of chemistry. With a remarkable portfolio consisting of 19 patents, Widmer has demonstrated exceptional creativity and expertise in developing processes that are valuable in the chemical industry. His work primarily focuses on synthesizing important compounds that serve as intermediates for the production of carotenoids.

Latest Patents

Among his latest inventions, two notable patents stand out. The first is a process for the C.sub.1-homologization of protected phorenol, which details a method for manufacturing the compound 4,8,8-trimethyl-1-oxaspiro[2.5]oct-4-en-6-ol. This process involves reacting a protected compound with dihalomethyllithium, a reagent that can be produced in situ, enhancing the efficiency of the synthesis. The end product and starting material are recognized for their value in carotenoid manufacturing.

The second noteworthy patent is an asymmetric hydrogenation process utilizing a ruthenium-diphosphine complex as a catalyst. This process converts specific compounds into their optically active enantiomers, showcasing Widmer's expertise in developing advanced chemical methodologies.

Career Highlights

Throughout his career, Erich Widmer has worked with esteemed organizations such as Hoffmann-La Roche Inc. and Roche Vitamins Inc. These companies have provided him with a platform to develop and refine his innovative ideas, contributing significantly to the pharmaceutical and nutritional industries.

Collaborations

Widmer's journey has also been enriched by collaborations with notable individuals in the field. He has worked closely with Reinhard Zell and Hans G. Leuenberger, a testament to his collaborative spirit and dedication to advancing scientific knowledge.

Conclusion

Erich Widmer's contributions to the field of chemistry through his 19 patents and groundbreaking processes reflect his innovative mindset and commitment to excellence. His work not only enhances the understanding of chemical synthesis but also provides valuable tools for industries that rely on these crucial compounds. As a prominent figure in his field, Widmer continues to inspire future generations of inventors and scientists.

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