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J-fiber Gmbh

USPTO Granted Patents = 12

EPO Patents = 8

Trademarks = 1

Forward Citations = 3

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22 inventors (with patents filed for the assignee):

Lothar Brehm (9 out of 15 patents)

Wolfgang Hämmerle (5 out of 7 patents)

Wolfgang Haemmerle (5 out of 5 patents)

4. Robert Hanf (4 out of 8 patents)

5. Christian Genz (4 out of 4 patents)

6. Matthias Auth (2 out of 3 patents)

7. Falk Wirth (2 out of 2 patents)

8. Juergen Rosenkranz (1 out of 1 patent)

9. Jurgen Rosenkranz (1 out of 2 patents)

10. Katrin Roessner (1 out of 2 patents)

11. Thomas Gutsche (1 out of 1 patent)

12. Elke Poppotz (1 out of 1 patent)

13. Harald Hein (1 out of 1 patent)

14. Christian Schulze (1 out of 1 patent)

15. Jörg Kötzing (4 patents)

12 patents: Sort by Forward Citations

1. 12252431 - Quartz fibre with hydrogen barrier layer and method for the production thereof (2025-03-18),

2. 11866360 - Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre (2024-01-09),

3. 11702358 - Method and apparatus for reproducibly producing a preform for glass fiber manufacture (2023-07-18),

4. 10974991 - Device for coating a fiber and a method for coating a fiber and a fiber (2021-04-13),

5. 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),

6. 9720264 - Polarization-maintaining optical fibre and preform and method for producing the same (2017-08-01),

7. 9255026 - Methods for making active laser fibers (2016-02-09),

8. 9249046 - Methods for making a graded-index multimode preform and fiber (2016-02-02),

9. 9164229 - Bend insensitive gradient index multi-mode light conducting fiber (2015-10-20),

10. 8879879 - Optical fiber, in particular a laser fiber containing a doped glass fiber core and cladding around the fiberglass core (2014-11-04),

11. 8805145 - Bend insensitive gradient index multi-mode light conducting fiber (2014-08-12),

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

J-fiber GmbH is a leading manufacturer of specialty optical fibers and fiber optic components. With over 30 years of experience in the industry, we provide high-quality products for various applications including telecommunications, medical, sensing, and data communication. Our comprehensive range of products and solutions are designed to meet the demands of an ever-evolving market. Visit our website to learn more about our services and products.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

12 Patents

#30 in Jena

#3,268 in Germany

#46,665 in the World

J-fiber Gmbh

Forward Citations = 3

22 inventors:

Lothar Brehm (9 out of 15 patents)

Wolfgang Hämmerle (5 out of 7 patents)

Wolfgang Haemmerle (5 out of 5 patents)

4. Robert Hanf (4 out of 8 patents)

5. Christian Genz (4 out of 4 patents)

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