Stephan Kohlstruk

USPTO Granted Patents = 51 (Patent Applications = 8)

CIPO Patents = 2 (Patent Applications = 1)

EPO Patents = 25 (Patent Applications = 32)

Average Co-Inventor Count = 4.5

ph-index = 10

Forward Citations = 284(Granted Patents)

Forward Citations (Not Self Cited) = 221(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Recklinghausen, DE (2000 - 2001)
Marl, DE (2002 - 2006)
Dülmen, DE (2008)
Duelmen, DE (2004 - 2018)
Gladbeck, DE (2018 - 2020)

Company Filing History:

Degussa Aktiengesellschaft

patents

4 out of 600

Evonik Operations Gmbh

patents

4. 3 out of 580

Huels Aktiengesellschaft

Degussa-huels Aktiengesellschaft

patents

where one patent can have more than one assignee

Years Active: 2000-2020

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Areas of Expertise:

Isocyanates

Alkoxysilane Groups

Amino Compounds

Epoxy Resin Composition

3D Printing

Polyisocyanates

Cycloaliphatic Diisocyanates

Polyurethane Coatings

Thermosetting Compositions

Catalytic Oxidation

Hydroxy-functionalized Acrylates

Dispersion Resins

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10669293 - Process for preparing isocyanates containing alkoxysilane groups (2020-06-02),

2. 10633401 - Process for preparing isocyanates containing alkoxysilane groups (2020-04-28),

3. 10626131 - Process for preparing isocyanates containing alkoxysilane groups (2020-04-21),

4. 10611782 - Process for preparing isocyanates containing alkoxysilane groups (2020-04-07),

5. 10519096 - Process for preparing amino compounds from nitrile compounds (2019-12-31),

6. 10343975 - Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamine (2019-07-09),

7. 10252980 - 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use (2019-04-09),

8. 10221277 - Epoxy resin composition comprising 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine (AM-CPDA) as hardener (2019-03-05),

9. 10214612 - Epoxy resin composition comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine as hardener (2019-02-26),

10. 10173979 - Hardener composition including 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine (2019-01-08),

11. 10160717 - 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use (2018-12-25),

12. 10125089 - Process for preparing 3 aminomethyl-3,5,5-trimethylcyclohexylamine (2018-11-13),

13. 10093605 - Catalytic oxidation of 3,5,5-trimethylcyclohexa-3-ene-1-one (β-isophorone) with hydrogen peroxide to afford 2,6,6-trimethyl-2-cyclohexene-1,4-dione (keto-isophorone) (2018-10-09),

14. 9937483 - Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine (2018-04-10),

15. 9878979 - Fine purification of isophoronenitrile by melt crystallization (2018-01-30),

Title: Inventor Stephan Kohlstruk

Introduction: Stephan Kohlstruk is a renowned inventor based in Gladbeck, Germany, known for his groundbreaking innovations in various fields.

Latest Patents: Stephan Kohlstruk's latest patents include advancements in renewable energy technologies, medical devices, and sustainable materials.

Career Highlights: Throughout his career, Stephan Kohlstruk has been instrumental in developing cutting-edge solutions that have significantly impacted industries such as healthcare, environmental sustainability, and technology.

Collaborations: Stephan Kohlstruk has collaborated with leading research institutions, universities, and companies worldwide to bring his inventions to life and make a positive difference in the world.

Conclusion: Stephan Kohlstruk's dedication to innovation and his passion for creating a better future through his inventions have solidified his reputation as a visionary inventor in the global community.

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