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J-Fiber Gmbh

USPTO Granted Patents = 13

% Expired Patents = 7.7

EPO Patents = 8

Forward Citations = 3

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14 inventors (with patents filed for the assignee):

Lothar Brehm (9 out of 15 patents)

Wolfgang Haemmerle (6 out of 6 patents)

Wolfgang Hämmerle (5 out of 7 patents)

4. Robert Hanf (4 out of 8 patents)

5. Christian Genz (4 out of 4 patents)

6. Matthias Auth (2 out of 4 patents)

7. Falk Wirth (2 out of 2 patents)

8. Christian Schulze (2 out of 2 patents)

9. Juergen Rosenkranz (1 out of 1 patent)

10. Jurgen Rosenkranz (1 out of 2 patents)

11. Katrin Roessner (1 out of 2 patents)

12. Thomas Gutsche (1 out of 1 patent)

13. Elke Poppotz (1 out of 1 patent)

14. Harald Hein (1 out of 1 patent)

15. Jörg Kötzing (4 patents)

13 patents: Sort by Forward Citations

1. 12515979 - Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre (2026-01-06),

2. 12252431 - Quartz fibre with hydrogen barrier layer and method for the production thereof (2025-03-18),

3. 11866360 - Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre (2024-01-09),

4. 11702358 - Method and apparatus for reproducibly producing a preform for glass fiber manufacture (2023-07-18),

5. 10974991 - Device for coating a fiber and a method for coating a fiber and a fiber (2021-04-13),

6. 10604440 - Method for the defined separation of a glass layer on an inner wall of a preform and preform and communication system (2020-03-31),

7. 9720264 - Polarization-maintaining optical fibre and preform and method for producing the same (2017-08-01),

8. 9255026 - Methods for making active laser fibers (2016-02-09),

9. 9249046 - Methods for making a graded-index multimode preform and fiber (2016-02-02),

10. 9164229 - Bend insensitive gradient index multi-mode light conducting fiber (2015-10-20),

11. 8879879 - Optical fiber, in particular a laser fiber containing a doped glass fiber core and cladding around the fiberglass core (2014-11-04),

12. 8805145 - Bend insensitive gradient index multi-mode light conducting fiber (2014-08-12),

13. 8800324 - Method for producing a glass fiber and device (2014-08-12),

J-Fiber GmbH, based in Jena, Germany, specializes in the development and production of advanced fiber optic technologies. The company focuses on providing high-performance optical fibers and components for various applications, including telecommunications, industrial sensing, and medical technology. With a commitment to innovation, J-Fiber aims to enhance connectivity and data transmission capabilities across multiple sectors, contributing to the advancement of optical communication systems and related technologies.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

13 Patents

#29 in Jena

#3,075 in Germany

#44,950 in the World

J-Fiber Gmbh

Forward Citations = 3

14 inventors:

Lothar Brehm (9 out of 15 patents)

Wolfgang Haemmerle (6 out of 6 patents)

Wolfgang Hämmerle (5 out of 7 patents)

4. Robert Hanf (4 out of 8 patents)

5. Christian Genz (4 out of 4 patents)

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