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Hanau am Main, Germany

Leybold Aktiengesellschaft

USPTO Granted Patents = 393

Trademarks = 10

Forward Citations = 5,375

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392 inventors (with patents filed for the assignee):

Joachim Szczyrbowski (24 out of 43 patents)

Klaus Hartig (18 out of 24 patents)

Roland Gesche (15 out of 23 patents)

4. Jaroslav Zejda (15 out of 19 patents)

5. Michael Scherer (14 out of 24 patents)

6. Michael Geisler (13 out of 18 patents)

7. Rudolf Latz (12 out of 12 patents)

8. Hanns-Peter Berges (11 out of 17 patents)

9. Anton Dietrich (11 out of 16 patents)

10. Michael Jung (11 out of 12 patents)

11. Thomas Krug (10 out of 10 patents)

12. Eggo Sichmann (9 out of 18 patents)

13. Peter Mahler (9 out of 14 patents)

14. Hans-Peter Kabelitz (9 out of 18 patents)

15. Rainer Gegenwart (9 out of 9 patents)

Core Competencies:

Friction Vacuum Pump

Dry-Compression Vacuum Pump

Leak Detector

Cryogenic Cooling Device

Vacuumtight Connection

Plasma Treatment

Thin Layer Coating

Gas Ballast Device

Magnetic Bearing Cell

Czochralski Apparatus

Sputtering Installation

Optical Filter

393 patents: Sort by Forward Citations

1. 6019581 - Friction vacuum pump with cooling arrangement (2000-02-01),

2. 5975857 - Process for operating a dry-compression vacuum pump as well as a (1999-11-02),

3. 5961124 - Sealing system for a vertically disposed shaft (1999-10-05),

4. 5923172 - Penning type gauge head with ignition aid (1999-07-13),

5. 5907092 - Countercurrent sniffing leak detector (1999-05-25),

6. 5900537 - Test gas leakage detector (1999-05-04),

7. 5880357 - Leak detector with vacuum pumps and operating process for same (1999-03-09),

8. 5878580 - Method of operating a cryogenic cooling device, and a cryogenic cooling (1999-03-09),

9. 5871338 - Vacuum pump with a gas ballast device (1999-02-16),

10. 5829794 - Vacuumtight connection (1998-11-03),

11. 5822842 - Method for masking a disk shaped substrate (1998-10-20),

12. 5789670 - Rain sensor (1998-08-04),

13. 5786529 - Search gas detector with vacuum pump and process for operating such a (1998-07-28),

14. 5770956 - Measurement amplifier (1998-06-23),

15. 5766348 - Rotating head for crystal pulling systems for carrying out the (1998-06-16),

Leybold Aktiengesellschaft is a leading global manufacturer and provider of vacuum technology solutions. With over 170 years of expertise, Leybold offers a wide range of vacuum pumps, systems, and services to various industries including research, industrial processes, and analytical applications. Their high-quality products are known for their reliability, efficiency, and innovative designs, helping customers achieve efficient vacuum processes and improve productivity. For more information, please visit their website.

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Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

393 Patents

#1 in

#156 in Germany

#2,293 in the World

Hanau am Main, Germany

Leybold Aktiengesellschaft

Forward Citations = 5,375

392 inventors:

Joachim Szczyrbowski (24 out of 43 patents)

Klaus Hartig (18 out of 24 patents)

Roland Gesche (15 out of 23 patents)

4. Jaroslav Zejda (15 out of 19 patents)

5. Michael Scherer (14 out of 24 patents)

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