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Asslar, Germany

Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh

USPTO Granted Patents = 25

Forward Citations = 308

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33 inventors (with patents filed for the assignee):

Heinrich Lotz (4 out of 13 patents)

Robert Hack (4 out of 4 patents)

Karl-Heinz Bernhardt (3 out of 5 patents)

4. Kurt Holss (3 out of 3 patents)

5. Willi Becker (3 out of 3 patents)

6. Helmut Strzala (3 out of 3 patents)

7. Roland Fischer (2 out of 6 patents)

8. Gerhard Hild (2 out of 2 patents)

9. Wilhelm Polhede (2 out of 3 patents)

10. Armin Blecker (1 out of 6 patents)

11. Armin Conrad (1 out of 1 patent)

12. Horst Reuschling (1 out of 1 patent)

13. Helmut Ochs (1 out of 1 patent)

14. Jens Lindemann (1 out of 1 patent)

15. Erhard Netz (1 out of 1 patent)

25 patents: Sort by Forward Citations

1. 5193998 - Sealing arrangement for heat treatment apparatus (1993-03-16),

2. 5193100 - Apparatus for detecting gaseous discharge in vacuum furnaces (1993-03-09),

3. 5088899 - Pump with drive motor (1992-02-18),

4. 5070264 - Position sensor (1991-12-03),

5. 5054748 - Multi-chamber vacuum installation (1991-10-08),

6. 5017106 - Pump for conveying gases and providing a differential pressure (1991-05-21),

7. 4893985 - Multi-stage molecular pump (1990-01-16),

8. 4850576 - Heat treatment of materials (1989-07-25),

9. 4832564 - Pumps (1989-05-23),

10. 4826394 - Vacuum pump (1989-05-02),

11. 4818223 - Apparatus for treating workpieces with hot gases including gas (1989-04-04),

12. 4784873 - Method of producing biological specimens (1988-11-15),

13. 4770574 - Discs with blades (1988-09-13),

14. 4708190 - Treating metals and/or metallic compounds (1987-11-24),

15. 4541772 - Pump with magnetic bearings (1985-09-17),

Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH specializes in the development, manufacture, and distribution of vacuum solutions. With decades of experience, we offer an extensive range of high-quality vacuum pumps, leak detectors, and measurement instruments. Our cutting-edge technology and innovative solutions cater to various industries, including semiconductor, research, analytics, and coating. Visit our website for more information.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

25 Patents

#2 in Asslar

#1,866 in Germany

#24,897 in the World

Asslar, Germany

Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh

Forward Citations = 308

33 inventors:

Heinrich Lotz (4 out of 13 patents)

Robert Hack (4 out of 4 patents)

Karl-Heinz Bernhardt (3 out of 5 patents)

4. Kurt Holss (3 out of 3 patents)

5. Willi Becker (3 out of 3 patents)

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