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For the Inventor, By the Inventor

Portage, MI, United States of America

Verlan H VanRheenen

This inventor holds 12 USPTO granted patents. Top assignee: The Upjohn Co.. Active years: 1980-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Verlan H VanRheenen. Retrieved from https://idiyas.com/inventor/verlan-h-vanrheenen

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 108(Granted Patents)


Company Filing History:

goldMedal12 out of 2,170 
 
The Upjohn Co.
 patents

Years Active: 1980-1991

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12 patents (USPTO):Explore Patents
1. 4990612 - 16.alpha.-methylation process (1991-02-05),
2. 4929395 - 16.alpha.-methylation process (1990-05-29),
3. 4891426 - 16.alpha.-methyl-17.alpha. 20-epoxysteroid and process (1990-01-02),
4. 4831131 - 11.beta.,17.alpha.-Dihydroxy-17.beta.-cyano-androstanes (1989-05-16),
5. 4704455 - 16.alpha.-methylated.DELTA.17(20)-corticoids (1987-11-03),
6. 4614621 - Ethynylation of 16-methylene-17-keto steroids (1986-09-30),
7. 4585590 - Cyanohydrin process (1986-04-29),
8. 4567001 - 16-Methylene-17.alpha.-hydroxy-progesterones (1986-01-28),
9. 4500461 - Cyanohydrin process (1985-02-19),
10. 4416821 - Process for preparing 16-methylene steroids (1983-11-22),
11. 4216159 - Synthesis of 16-unsaturated pregnanes from 17-keto steroids (1980-08-05),
12. 4189596 - Preparing 2-arylalkanoic acid derivatives (1980-02-19),

Title: Verlan H VanRheenen: Innovator in Corticoid Chemistry

Introduction

Verlan H VanRheenen is a notable inventor based in Portage, MI (US), recognized for his significant contributions to the field of corticoid chemistry. With a total of 12 patents to his name, he has made substantial advancements in the production and transformation of steroid compounds.

Latest Patents

One of his latest patents is the 16.alpha.-methylation process. This innovative process involves the production of a .DELTA..sup.17(20)-steroid by starting with a 16-unsaturated corticoid and contacting it with a methylating agent in the presence of a copper catalyst and a silylating agent. Additionally, the 16.alpha.-methylation process allows for the transformation of C.sub.16-unsaturated corticoids into the corresponding 16.alpha.-methyl-17.alpha.-hydroxy corticoids using a .DELTA..sup.17 (.sup.20)-20-silyl ether.

Career Highlights

Verlan H VanRheenen has spent a significant portion of his career at The Upjohn Company, where he has been instrumental in developing innovative processes that enhance the production of steroid compounds. His work has not only contributed to the scientific community but has also had practical applications in pharmaceuticals.

Collaborations

Throughout his career, VanRheenen has collaborated with esteemed colleagues such as Joel E Huber and Edward J Hessler. These collaborations have fostered an environment of innovation and have led to the successful development of various patented processes.

Conclusion

Verlan H VanRheenen's contributions to corticoid chemistry through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence the production of steroid compounds, showcasing the importance of innovation in scientific research.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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