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For the Inventor, By the Inventor

Krefeld, Germany

Alexander Karbach

This inventor holds 19 USPTO granted patents and 1 published patent application and 8 EPO patents, primarily in Polymer Chemistry. Top assignees: Bayer Aktiengesellschaft, Bayer Materialscience Ag, Bayer Antwerpen N.v.. Active years: 1993-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Alexander Karbach. Retrieved from https://idiyas.com/inventor/alexander-karbach

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

Calculating rank
USPTO Granted Patents = 19 

% Patents Active = 73.7

 

Average Co-Inventor Count = 3.8

ph-index = 6

Forward Citations = 231(Granted Patents)


Company Filing History:

goldMedal10 out of 12,269 
 
Bayer Aktiengesellschaft
 patents
silverMedal4 out of 532 
 
Bayer Materialscience Ag
 patents
bronzeMedal2 out of 10 
 
Bayer Antwerpen N.v.
 patents
4. 2 out of 1,013 
 
Bayer Corporation
 patents
5. 1 out of 38 
 
Bayeraktiengesellschaft
 patents
6. 1 out of 691 
 
Covestro Deutschland Ag
 patents
7. 1 out of 252 
 
H.c. Starck Gmbh
 patents
8. 2 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1993-2018

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Areas of Expertise:
Polysiloxane
Polycarbonate
Rheological Properties
Surface Hardness
Extruded Films
Flame Resistance
Electro-Optical Device
Conductive Coatings
Aqueous Dispersions
Thermotropic Molding
Polyethersulfone
Polyisocyanates
19 patents (USPTO):Explore Patents
1. 10035884 - Polysiloxane-polycarbonate block cocondensates with improved rheological properties (2018-07-31),
2. 8329852 - Copolycarbonates having improved surface hardness (2012-12-11),
3. 8084570 - Polycarbonate for making extruded films that are virtually free of surface defects (2011-12-27),
4. 7901467 - Process for treatment of metal surfaces (2011-03-08),
5. 7879967 - Modified polycarbonates, polyester carbonates and polyesters having improved elongation behavior and flame resistance (2011-02-01),
6. 7585983 - Alkylenedioxythiophenes and poly(alkylenedioxythiophenes) containing mesogenic groups (2009-09-08),
7. 6940626 - Multilayered arrangement for electro-optical device (2005-09-06),
8. 6833182 - Size compositions, sized glass fibers and their use (2004-12-21),
9. 6320066 - Amino-functional urea-alkoxysilanes, a method for the production thereof and their use (2001-11-20),
10. 6143823 - Thermoplastically processable thermotropic molding compounds (2000-11-07),
11. 6083635 - Conductive coatings (2000-07-04),
12. 5900454 - Aqueous dispersions, process for the production thereof and use thereof (1999-05-04),
13. 5811480 - Size composition, sized glass fibers and use thereof (1998-09-22),
14. 5766515 - Conductive coatings (1998-06-16),
15. 5587435 - Polyethersulfone/polyester block copolymers and a process for their (1996-12-24),

Title: The Innovative Journey of Alexander Karbach

Introduction

Alexander Karbach, an accomplished inventor based in Krefeld, Germany, has made significant contributions to the field of material science. With a total of 19 patents to his name, he has focused primarily on innovations that enhance the properties and usability of various chemical compounds, particularly polysiloxane and polycarbonate materials.

Latest Patents

Among Karbach's latest inventions are two notable patents:

1. **Polysiloxane-polycarbonate block cocondensates with improved rheological properties** - This invention relates to polysiloxane-polycarbonate block cocondensates derived from a continuous melt transesterification process. It features polysiloxane blocks alongside polycarbonate blocks that exhibit improved rheological and mechanical properties. The patent emphasizes the creation of mouldings and extrudates made from these advanced materials, with a specific siloxane domain distribution measured by atomic force microscopy and light microscopy.

2. **Copolycarbonates having improved surface hardness** - This innovative patent outlines copolycarbonates with enhanced surface hardness. Karbach details the processes for their preparation and their applications in producing blends, shaped articles, and extrudates, showcasing his commitment to improving industrial materials.

Career Highlights

Karbach's career is highlighted by his tenure with prominent firms such as Bayer Aktiengesellschaft and Bayer MaterialScience AG. These roles have allowed him to develop and refine his expertise in polymer technology, leading to impactful innovations that serve various industries.

Collaborations

Throughout his career, Alexander Karbach has collaborated with notable professionals in the field, including Rolf Wehrmann and Stephan Kirchmeyer. These partnerships have fostered an environment of innovation and have contributed to the success of several of his patented inventions.

Conclusion

Alexander Karbach’s work demonstrates a strong commitment to improving material properties through innovative chemical processes. His contributions to polysiloxane and polycarbonate technologies, alongside his collaborations and career at leading companies, solidify his status as a prominent figure in the field of inventions.

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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