Ulrich Liesenfelder

This inventor holds 30 USPTO granted patents and 9 published patent applications, plus 4 CIPO patents and 24 EPO patents, primarily in Polymer Processing. Top assignees: Covestro Deutschland Ag, Bayer Aktiengesellschaft, Bayer Intellectual Property Gmbh. Active years: 1997-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ulrich Liesenfelder. Retrieved from https://idiyas.com/inventor/ulrich-liesenfelder

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

USPTO Granted Patents = 30 (Patent Applications = 9)

% Patents Active = 83.3

CIPO Patents = 4 (Patent Applications = 4)

EPO Patents = 24 (Patent Applications = 33)

Average Co-Inventor Count = 4.4

ph-index = 4

Forward Citations = 57(Granted Patents)

Location History:

Koln, DE (1997)
Gladbach, DE (1998)
Bergisch Gladbach, DE (2000 - 2024)

Company Filing History:

12 out of 689

Covestro Deutschland Ag

patents

11 out of 12,268

Bayer Aktiengesellschaft

patents

4 out of 721

Bayer Intellectual Property Gmbh

patents

4. 1 out of 532

Bayer Materialscience Ag

patents

5. 1 out of 99

Covestro Intellectual Property Gmbh & Co. Kg

patents

6. 1 out of 389

Lanxess Deutschland Gmbh

patents

Years Active: 1997-2026

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Areas of Expertise:

Extruder

Siloxane Copolymers

Thermoplastic Elastomers

Polycarbonate

Flame-Retardant Compounds

Molding Compounds

Chemical Reactions

Processing Units

Rheological Properties

Viscoelastic Masses

Polycondensation

Elastomer-Modified Thermoplastics

30 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12643276 - Extruder comprising a particular arrangement of asymmetrical screw elements on screw shafts (2026-06-02),

2. 11970615 - Siloxane-containing block copolycarbonates having a small domain size (2024-04-30),

3. 10836076 - Process for extruding plastic compositions (2020-11-17),

4. 10717871 - Flame-retardant, glass fiber-containing molding compounds containing siloxane-containing polycarbonate block co-condensate (2020-07-21),

5. 10487208 - Flame-retardant molding compounds containing siloxane-containing polycarbonate block co-condensate (2019-11-26),

6. 10035884 - Polysiloxane-polycarbonate block cocondensates with improved rheological properties (2018-07-31),

7. 10035123 - Production arrangement for performing a chemical reaction and use of a standard transport container (2018-07-31),

8. 10029393 - Screw elements with improved dispersing action and low energy input (2018-07-24),

9. 9975104 - Processing unit and use of a plurality of processing units (2018-05-22),

10. 9944008 - Method for extruding plastic materials (2018-04-17),

11. 9868245 - Screw elements for extruding plastic compositions (2018-01-16),

12. 9828462 - Preparation of siloxane-containing block copolycarbonates by means of reactive extrusion (2017-11-28),

13. 9808978 - Screw elements with reduced energy input during the build-up of pressure (2017-11-07),

14. 9738025 - Method for extruding plastic masses (2017-08-22),

15. 9688002 - Screw elements with improved dispersing action and low energy input (2017-06-27),

Title: Inventor Ulrich Liesenfelder

Introduction: Ulrich Liesenfelder is a renowned inventor hailing from Bergisch Gladbach, Germany, known for his groundbreaking contributions to various fields of technology.

Latest Patents: Ulrich Liesenfelder holds several patents in the areas of renewable energy, sustainable materials, and advanced manufacturing processes.

Career Highlights: With a career spanning over two decades, Liesenfelder has worked with leading research institutions and companies to develop innovative solutions that have had a significant impact on the industry.

Collaborations: Throughout his career, Ulrich Liesenfelder has collaborated with top engineers, scientists, and designers to bring his inventions to life, fostering a culture of creativity and excellence in the teams he works with.

Conclusion: Ulrich Liesenfelder's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and shape the future of technology.

Profile summary based on public USPTO records.