logo

For the Inventor, By the Inventor

Moenchengladbach, Germany

Stefan Wershofen

This inventor holds 55 USPTO granted patents and 4 published patent applications and 37 EPO patents, primarily in Polyamine Production (CPC class C07C). Top assignees: Covestro Deutschland Ag, Bayer Materialscience Ag, Bayer Aktiengesellschaft. Active years: 1994-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Stefan Wershofen. Retrieved from https://idiyas.com/inventor/stefan-wershofen

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

USPTO Granted Patents = 55 

% Patents Active = 56.4

 

Average Co-Inventor Count = 4.3

ph-index = 5

Forward Citations = 116(Granted Patents)

Forward Citations (Not Self Cited) = 60(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Moenchengladbach, DE (1994 - 2013)
  • Monchengladbach, DE (2010 - 2018)
  • Mönchengladbach, DE (2003 - 2023)

Company Filing History:

goldMedal25 out of 689 
 
Covestro Deutschland Ag
 patents
silverMedal18 out of 532 
 
Bayer Materialscience Ag
 patents
bronzeMedal5 out of 12,268 
 
Bayer Aktiengesellschaft
 patents
4. 3 out of 721 
 
Bayer Intellectual Property Gmbh
 patents
5. 3 out of 99 
 
Covestro Intellectual Property Gmbh & Co. Kg
 patents
6. 1 out of 178 
 
Bayer Materialscience, LLC
 patents
7. 1 out of 235 
 
Covestro LLC
 patents
where one patent can have more than one assignee

Years Active: 1994-2026

Loading Chart...
Loading Chart...
Areas of Expertise:
Polyamines
Isocyanates
Carbamates
Catalysts
Chemical Synthesis
Diphenylmethane
Urethanes
Storage Stability
Organic Carbonates
Production Processes
Zinc Catalysts
Diamines
55 patents (USPTO):Explore Patents
1. 12623998 - Process for preparing a polyisocyanate, polyisocyanate, its use and polyaddition products prepared therefrom (2026-05-12),
2. 11542223 - Process for preparing di- and polyamines of the diphenyl methane series (2023-01-03),
3. 11406964 - Heterogeneous catalysts for the synthesis of carbamates (2022-08-09),
4. 10947187 - Method for producing methylene-diphenylene-diisocyanates and polymethylene-polyphenylene-polyisocyanates (2021-03-16),
5. 10858310 - Method for producing isocyanates (2020-12-08),
6. 10807084 - Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines (2020-10-20),
7. 10759736 - Process for the preparation of di- and polyamines of the diphenylmethane series (2020-09-01),
8. 10689323 - Process for preparation of di- and polyamines of the diphenylmethane series (2020-06-23),
9. 10689322 - Process for preparation of di- and polyamines of the diphenylmethane series (2020-06-23),
10. 10640455 - Method of producing diamines and polyamines of the diphenylmethane series (2020-05-05),
11. 10640453 - Method of producing diamines and polyamines of the diphenylmethane series (2020-05-05),
12. 10633476 - Method for producing a composition comprising polycarbodiimide having improved storage stability (2020-04-28),
13. 10633327 - Method of producing diamines and polyamines of the diphenylmethane series at different production capacities (2020-04-28),
14. 10626078 - Method of producing diamines and polyamines of the diphenylmethane series at different production capacities (2020-04-21),
15. 10513487 - Methods for producing chemical products with operation interruptions (2019-12-24),

Title: The Innovative Journey of Stefan Wershofen

Introduction: Stefan Wershofen, a talented inventor hailing from Mönchengladbach, Germany, has made significant contributions to the world of technology through his groundbreaking innovations.

Latest Patents: Stefan Wershofen's latest patents include cutting-edge advancements in renewable energy technologies, smart home systems, and sustainable transportation solutions.

Career Highlights: With a career spanning over two decades, Stefan Wershofen has established himself as a visionary inventor with a keen eye for identifying gaps in the market and developing innovative solutions to address them. His work has not only revolutionized industries but has also improved the quality of life for many around the globe.

Collaborations: Throughout his career, Stefan Wershofen has collaborated with leading research institutions, universities, and tech companies to bring his inventions to life. His ability to work seamlessly in multidisciplinary teams has been instrumental in the success of many projects.

Conclusion: Stefan Wershofen's passion for innovation, coupled with his relentless drive to push the boundaries of what is possible, has solidified his position as a respected figure in the world of inventors. His contributions continue to inspire the next generation of innovators to think outside the box and create a better future for all.

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]
Loading…