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EPO Patents = 4

Forward Citations = 4

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20 inventors (with patents filed for the assignee):

Lutz Parthier (4 out of 20 patents)

Ute Natura (2 out of 8 patents)

Joerg Staeblein (2 out of 5 patents)

4. Wolfgang Triebel (2 out of 5 patents)

5. Martin Letz (1 out of 23 patents)

6. Gunther Wehrhan (1 out of 9 patents)

7. Michael Selle (1 out of 1 patent)

8. Erik Foerster (1 out of 1 patent)

9. Christian Muehlig (1 out of 4 patents)

10. Gabriela Toepfer (1 out of 2 patents)

11. Regina Martin (1 out of 6 patents)

12. Alfons Burkert (1 out of 1 patent)

13. Joachim Bergmann (1 out of 1 patent)

14. Christian Kusch (1 out of 3 patents)

15. Jochen Alkemper (27 patents)

6 patents: Sort by Forward Citations

1. 7968074 - Method for making low-stress large-volume crystals with reduced stress birefringence and more uniform refractive index and crystals made thereby (2011-06-28),

2. 7883578 - [object Object] (2011-02-08),

3. 7873084 - Arrangement and method for preventing the depolarization of linear-polarized light during the transmission of light through crystals (2011-01-18),

4. 7837969 - [object Object] (2010-11-23),

5. 7825387 - Method for quantitative determination of the suitability of crystals for optical components exposed to high energy densities, crystals graded in this way and uses thereof (2010-11-02),

6. 7822093 - Method and apparatus for changing the length of a laser pulse (2010-10-26),

Hellma Materials is a leading global manufacturer of high-quality optical glass and quartz glass components for a wide range of industries including biomedical, semiconductor, and analytical chemistry. With over 100 years of experience, Hellma Materials is known for its precision engineering, innovation, and exceptional customer service.

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USPTO Data Jan 1 1976 - Dec 9 2025

6 Patents

#49 in Jena

#5,318 in Germany

Jena, Germany

Hellma Materials Gmbh & Co. Kg