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Cologne, Germany

Hans-Ulrich Hafner

USPTO Granted Patents = 5

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 71(Granted Patents)

Location History:

Koln, DE (1990 - 1995)
Cologne, DE (1992 - 2001)

Company Filing History:

Leybold Aktiengesellschaft

Leybold Vakuum Gmbh

Years Active: 1990-2001

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6263677 - Multistage low-temperature refrigeration machine (2001-07-24),

2. 6065295 - Low-temperature refrigerator with cold head and a process for optimizing (2000-05-23),

3. 5400604 - Cryopump and process for regenerating said cryopump (1995-03-28),

4. 5111667 - Two-stage cryopump (1992-05-12),

5. 4953359 - Method of adapting a two-stage refrigerator cryopump to a specific gas (1990-09-04),

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