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For the Inventor, By the Inventor

Leverkusen, Germany

Wolfgang Cohnen

This inventor holds 20 USPTO granted patents, primarily in Polycarbonate Chemistry. Top assignee: Bayer Aktiengesellschaft. Active years: 1976-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Wolfgang Cohnen. Retrieved from https://idiyas.com/inventor/wolfgang-cohnen

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

USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 8

Forward Citations = 194(Granted Patents)


Location History:

  • Krefeld, DE (1976 - 1980)
  • Leverkusen, DE (1977 - 1994)

Company Filing History:

goldMedal20 out of 12,268 
 
Bayer Aktiengesellschaft
 patents

Years Active: 1976-1994

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Areas of Expertise:
Polycarbonate
Flame Retardance
Stabilization
Weather Resistance
Antistatic Agents
UV Light Stabilization
Molding Compositions
Laminates
Silicon Compounds
Boric Acid Esters
Oxetane Compounds
Blowing Agents
20 patents (USPTO):Explore Patents
1. 5300140 - Hydroprimer for metallising substrate surfaces (1994-04-05),
2. 4552911 - Polycarbonate molding compositions having improved flame retardance (1985-11-12),
3. 4503213 - Process for the preparation of polycarbonates having (1985-03-05),
4. 4471104 - Process for the preparation of polycarbonates having sulfonanilide (1984-09-11),
5. 4450249 - Internal antistatic agents for polycarbonates and for polycarbonate films (1984-05-22),
6. 4404351 - Process for the isolation of polycarbonates based on (1983-09-13),
7. 4375525 - Use of organic silicon compounds for stabilizing and brightening (1983-03-01),
8. 4367303 - Solutions for stabilizing thermoplastic polycarbonates (1983-01-04),
9. 4342681 - Use of organic silicon compounds in combination with oxetane compounds, (1982-08-03),
10. 4327015 - Flame resistant, transparent polycarbonates comprising bisulfite adducts (1982-04-27),
11. 4301212 - Scratch-resistant and weather-resistant laminates based on polycarbonate (1981-11-17),
12. 4289685 - Process for the preparation of flame-resistant polycarbonates (1981-09-15),
13. 4228067 - UV Light stabilized polycarbonate composition (1980-10-14),
14. 4225483 - Boric acid esters and oxetanes for stabilizing phosphite-free (1980-09-30),
15. 4208489 - Polycarbonate molding compositions with improved flame-repellency (1980-06-17),

Title: Innovations by Wolfgang Cohnen: Pioneering Advances in Polymer Chemistry

Introduction

Wolfgang Cohnen, an accomplished inventor based in Leverkusen, Germany, has made significant contributions to the field of polymer chemistry. With a remarkable portfolio of 20 patents, Cohnen has focused on developing innovative solutions for various industrial applications. His work is particularly notable for its implications in metallization processes and flame retardant materials.

Latest Patents

Among Wolfgang Cohnen's latest patents is a groundbreaking formulation for a hydroprimer designed for metallizing substrate surfaces. This invention enables the pretreatment of diverse substrate surfaces, preparing them for subsequent metallization in a currentless metallization bath. The formulation consists of a water-dispersible polymer, a metallization catalyst, and optional fillers, among other constituents.

Additionally, Cohnen has developed polycarbonate molding compositions with enhanced flame retardance. This invention incorporates specific additives such as alkali or alkaline earth metal salts and tetrahalogenophthalimides. These compositions also include optional glass fibers and are characterized by their bromine content, significantly contributing to the safety and durability of polycarbonate materials.

Career Highlights

Cohnen’s professional journey is marked by his tenure at Bayer Aktiengesellschaft, a global leader in pharmaceuticals and life sciences. His innovative research has positioned him as a vital contributor within the company and the broader scientific community. His patents reflect his commitment to enhancing material properties and ensuring safer applications in industry.

Collaborations

Throughout his career, Wolfgang Cohnen has collaborated with esteemed colleagues, including Dieter Freitag and Karsten J Idel. These partnerships have fostered a productive environment for creativity and technical advancement, allowing them to push the boundaries of polymer science together.

Conclusion

Wolfgang Cohnen’s contributions to polymer chemistry and material science through his 20 patents demonstrate a robust dedication to innovation. His latest work continues to pave the way for advancements in metallization processes and flame retardant materials, underscoring his impact within Bayer Aktiengesellschaft and the industry at large.

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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