Stefan Sommer

This inventor holds 13 USPTO granted patents and 3 published patent applications, plus 3 CIPO patents and 13 EPO patents. Top assignees: Bayer Materialscience Ag, Covestro Deutschland Ag, Allnex IP S.a.r.l.. Active years: 2011-2021.

USPTO Granted Patents = 13 (Patent Applications = 3)

% Patents Active = 76.9

CIPO Patents = 3

EPO Patents = 13 (Patent Applications = 13)

Average Co-Inventor Count = 3.9

ph-index = 2

Forward Citations = 12(Granted Patents)

Company Filing History:

6 out of 532

Bayer Materialscience Ag

patents

4 out of 687

Covestro Deutschland Ag

Bayer Materialscience, LLC

patents

where one patent can have more than one assignee

Years Active: 2011-2021

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11059934 - Process for producing (cyclo)aliphatic polycarbonate polyols having low reactivity (2021-07-13),

2. 9676894 - Aqueous polyurethane dispersions (2017-06-13),

3. 9631117 - Process for the preparation of low-viscosity, water-dilutable urethane (meth)acrylates (2017-04-25),

4. 9567423 - Low-viscosity polyurethane acrylate dispersions (2017-02-14),

5. 9321893 - Radiation-curable whipped foams (2016-04-26),

6. 9057003 - Process for the preparation of low-viscosity, water-emulsifiable allophanates with radiation-curable groups (2015-06-16),

7. 9034985 - Aqueous coating systems based on physically drying urethane acrylates (2015-05-19),

8. 8933146 - Process for producing hard coating systems based on aqueous polyurethane dispersions (2015-01-13),

9. 8932722 - Process for the preparation of low-viscosity, water-dilutable urethane (meth)acrylates (2015-01-13),

10. 8865832 - Tin-free aqueous polyurethane dispersions (2014-10-21),

11. 8647471 - Process for the production of sized and/or wet-strength papers, paperboards and cardboards (2014-02-11),

12. 8231976 - Block-resistant, radiation-curable coating systems based on high molecular mass, aqueous polyurethane dispersions (2012-07-31),

13. 7868055 - UV-hardenable dispersions based on polyisocyanates (2011-01-11),

Title: The Innovative Contributions of Stefan Sommer

Introduction

Stefan Sommer is a notable inventor based in Leverkusen, Germany. He has made significant contributions to the field of polycarbonate polyols and aqueous polyurethane dispersions. With a total of 13 patents to his name, Sommer's work has had a considerable impact on material science and engineering.

Latest Patents

Sommer's latest patents include a process for producing (cyclo)aliphatic polycarbonate polyols with low reactivity. This invention outlines a method that enhances the production efficiency of these polyols. Another significant patent involves radiation-curable, aqueous dispersions based on polyurethane acrylates. This invention is characterized by its unique builder components, which include aromatic polyepoxy(meth)acrylates and oligo- or polyesters containing unsaturated fatty acids. These innovations are crucial for developing advanced lacquers and adhesives.

Career Highlights

Throughout his career, Stefan Sommer has worked with prominent companies such as Bayer MaterialScience AG and Covestro Deutschland AG. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and material development.

Collaborations

Sommer has collaborated with notable colleagues, including Erhard Luehmann and Jan Weikard. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Stefan Sommer's innovative work in the field of polycarbonate polyols and polyurethane dispersions showcases his dedication to advancing material science. His contributions continue to influence the industry and inspire future innovations.