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For the Inventor, By the Inventor

Berlin, Germany

Klaus Annen

USPTO Granted Patents = 37

Average Co-Inventor Count = 4.9

ph-index = 10

Forward Citations = 285(Granted Patents)


Location History:

  • Munster-Albachten, DE (1986 - 1988)
  • Berlin, DE (1976 - 1990)
  • Muenster-Albachten, DE (1987 - 1990)

Company Filing History:

goldMedal37 out of 1,384 
 
Schering Aktiengesellschaft
 patents

Years Active: 1976-1990

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37 patents (USPTO):Explore Patents
1. 4956482 - Process for the preparation of pregnane derivatives (1990-09-11),
2. 4945064 - Estrane and androstane derivatives, process for producing them and (1990-07-31),
3. 4912098 - Antiinflammatory 6 alpha-methylhydrocortisones (1990-03-27),
4. 4891365 - 17-Substituted estradienes and estratrienes (1990-01-02),
5. 4777165 - 6.alpha., 16.beta.-dimethyl corticoids and their anti-inflammatory use (1988-10-11),
6. 4708823 - 17 .alpha.-chloroethynyl pregnane derivatives (1987-11-24),
7. 4701451 - Novel 6,16-dimethylcorticoids their preparation and use (1987-10-20),
8. 4670427 - 1.alpha.,2.alpha.-methylene-6-methylene- and 6.alpha.-methylpregnenes, (1987-06-02),
9. 4645763 - 6.alpha.-methyl corticoids, their production and use (1987-02-24),
10. 4619922 - 6.alpha., 16.alpha.-dimethyl corticoids (1986-10-28),
11. 4609651 - 11.beta.-arylestradienes, their production, and pharmaceutical (1986-09-02),
12. 4587236 - Novel 6.alpha.-methylprednisolone derivatives, their preparation, and (1986-05-06),
13. 4567002 - Process for the preparation of 17-haloethynyl steroids, and novel (1986-01-28),
14. 4555507 - Novel 6, 16-dimethylcorticoids, their preparation and use (1985-11-26),
15. 4550100 - Process for the preparation of 17.alpha.-bromoethynyl- and (1985-10-29),

Title: The Innovative Contributions of Klaus Annen in Pharmaceutical Chemistry

Introduction: Klaus Annen, a distinguished inventor based in Berlin, Germany, has made significant contributions to the field of pharmaceutical chemistry. His expertise is reflected in an impressive portfolio of 37 patents that showcase his innovative research and development efforts.

Latest Patents: Among his latest patents, Annen has focused on the "Process for the preparation of pregnane derivatives." This patent details a method of esterification of known androstane derivatives, leading to the creation of new esters. Additionally, he has developed patents concerning "Estrane and androstane derivatives" wherein various substituents, including bromine and trialkyltin, play crucial roles in their properties and applications.

Career Highlights: Klaus Annen has established a reputable career at Schering Aktiengesellschaft, a company known for its advancements in pharmaceuticals and healthcare. His innovative work not only enhances drug formulations but also contributes to the broader scientific community's understanding of steroid derivatives.

Collaborations: Throughout his career, Annen has collaborated with notable colleagues, including Henry Laurent and Rudolf Wiechert. These professional partnerships have fostered a collaborative environment that bolsters the development of novel pharmaceutical solutions.

Conclusion: Klaus Annen's contributions to the field of chemistry and his extensive patent portfolio exemplify the spirit of innovation. His work at Schering Aktiengesellschaft continues to influence the pharmaceutical industry, highlighting the importance of research and development in creating effective medicinal compounds.

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