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Wetzlar, Germany

Ernst Leitz Wetzlar Gmbh

USPTO Granted Patents = 168

EPO Patents = 1

Trademarks = 6

Forward Citations = 1,845

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166 inventors (with patents filed for the assignee):

Heinz Broemer (13 out of 18 patents)

Robert Lisfeld (11 out of 11 patents)

Guenter Reinheimer (9 out of 9 patents)

4. Knut Heitmann (9 out of 13 patents)

5. Walter Bletz (8 out of 10 patents)

6. Winfried Kraft (8 out of 12 patents)

7. Klaus-Dieter Schaefer (8 out of 11 patents)

8. Heinrich Janke (8 out of 10 patents)

9. Hans-Kurt Uellenberg (8 out of 8 patents)

10. Henning Franek (7 out of 10 patents)

11. Herbert Leiter (7 out of 8 patents)

12. Erich Schuster (7 out of 7 patents)

13. Hans-Dieter Jacoby (7 out of 7 patents)

14. Alfred Hengst (6 out of 19 patents)

15. Gunter Reinheimer (6 out of 6 patents)

Core Competencies:

Microscope

Photographic Camera

Optical Glass

Focusing Drive

Piezoelectric Device

Illumination Apparatus

Optical Components

Auditory Prosthesis

Adjustable Mounting

Image Capture

Optical Systems

Ceramic Material

168 patents: Sort by Forward Citations

1. 5025147 - Sensor for converting a distance to optical and further to electrical (1991-06-18),

2. 4961636 - Revolving nose piece for optical components and process for adjusting (1990-10-09),

3. 4946266 - Universal object holder for microscopes (1990-08-07),

4. 4930882 - Adjustable microscope focusing drive (1990-06-05),

5. 4915721 - Process for preparation of fluorophosphate optical glass (1990-04-10),

6. 4889548 - Use of an oxide ceramic material for compression molds for shaping (1989-12-26),

7. 4881897 - Tooth-root implant with long-term resistance to repetitive stresses (1989-11-21),

8. 4881802 - Combined bright field-dark field incident light illumination apparatus (1989-11-21),

9. 4871290 - Automatic handling apparatus for plate-shaped objects (1989-10-03),

10. 4868128 - Process for dry dispersal of particles, and a device for carrying out (1989-09-19),

11. 4859896 - Piezoelectric precision positioning device (1989-08-22),

12. 4859635 - Optical fluorophosphate glass having anomalous positive partial (1989-08-22),

13. 4857487 - Optical fluorophosphate glasses possessing positive anomalous partial (1989-08-15),

14. 4837595 - Process and device for photographing microscopic objects (1989-06-06),

15. 4830655 - High temperature-resistant material for devices used for forming glass (1989-05-16),

Company Overview

Ernst Leitz Wetzlar GmbH, based in Wetzlar, Germany, is renowned for its expertise in optical devices, particularly in the fields of microscopy and photography. The company specializes in developing advanced optical glass and components, focusing on precision instruments that enhance visual clarity and detail. Its innovative technologies include illumination apparatuses and piezoelectric devices, catering to both scientific and artistic applications. With a commitment to quality and precision, Ernst Leitz Wetzlar continues to be a leader in optical technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

168 Patents

#2 in Wetzlar

#360 in Germany

#4,915 in the World

Wetzlar, Germany

Ernst Leitz Wetzlar Gmbh

Forward Citations = 1,845

166 inventors:

Heinz Broemer (13 out of 18 patents)

Robert Lisfeld (11 out of 11 patents)

Guenter Reinheimer (9 out of 9 patents)

4. Knut Heitmann (9 out of 13 patents)

5. Walter Bletz (8 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ernst Leitz Wetzlar Gmbh. Retrieved from https://idiyas.com/company/ernst-leitz-wetzlar

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

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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