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For the Inventor, By the Inventor

Wiesbaden, Germany

Hartmut Steppan

USPTO Granted Patents = 14

Average Co-Inventor Count = 2.5

ph-index = 8

Forward Citations = 155(Granted Patents)


Location History:

  • Wiesbaden-Detzheim, DE (1979)
  • Wiesbaden-Dotzheim, DE (1976 - 1990)
  • Wiesbaden, DE (1976 - 1993)

Company Filing History:

goldMedal14 out of 6,662 
 
Hoechst Aktiengesellschaft
 patents

Years Active: 1976-1993

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14 patents (USPTO):Explore Patents
1. 5217845 - Photopolymerizable mixture and photopolymerizable copying material (1993-06-08),
2. 5200299 - Quinoline and acridine compounds effective as photoinitiators and (1993-04-06),
3. 5162190 - 1,2-naphthoquinone-2-diazide-sulfonic acid amides and photosensitive (1992-11-10),
4. 4966828 - Carbonylmethylene-heterocyclic compounds containing trihalogenomethyl (1990-10-30),
5. 4956264 - Radiation-polymerizable mixture (1990-09-11),
6. 4776892 - Process for stripping light-hardened photoresist layers (1988-10-11),
7. 4661432 - Light-sensitive, diazonium group-containing polycondensation product, (1987-04-28),
8. 4659645 - Photosensitive mixture and photosensitive recording material with (1987-04-21),
9. 4506003 - Positive-working radiation-sensitive mixture (1985-03-19),
10. 4401520 - Process for the preparation of screen printing stencils by an (1983-08-30),
11. 4159202 - Photopolymer having 2-pyridone side group (1979-06-26),
12. 4021243 - Diazo light-sensitive copying composition and process of using in the (1977-05-03),
13. 3985566 - Photosensitive crosslinkable 1-carbonyloxy-1H-naphthalene-2-one polymers (1976-10-12),
14. 3969323 - Photo-crosslinkable 2-pyrone polymers and processes for the manufacture (1976-07-13),

Title: The Innovative Contributions of Hartmut Steppan

Introduction

Hartmut Steppan is a notable inventor based in Wiesbaden, Germany. He has made significant contributions to the field of photopolymerization, holding a total of 14 patents. His work has advanced the understanding and application of photopolymerizable materials in various industries.

Latest Patents

Among his latest patents, Steppan has developed a photopolymerizable mixture that includes a polymeric binder, a polymerizable compound, and an acridine compound as a photoinitiator. This innovative mixture enhances the efficiency of photopolymerization processes. Additionally, he has patented compounds of the general formula I, which are effective as photoinitiators, showcasing his expertise in the field.

Career Highlights

Steppan has had a distinguished career, primarily working with Hoechst Aktiengesellschaft, a leading company in the chemical and pharmaceutical sectors. His work has not only contributed to the company's success but has also positioned him as a key figure in the development of new materials.

Collaborations

Throughout his career, Steppan has collaborated with esteemed colleagues such as Hans Ruckert and Gerhard Buhr. These partnerships have fostered innovation and have been instrumental in the advancement of their shared research interests.

Conclusion

Hartmut Steppan's contributions to the field of photopolymerization and his extensive patent portfolio highlight his role as a leading inventor. His work continues to influence the industry and pave the way for future innovations.

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