Inventor
Hans-Joachim Forth
Inventor
Cologne, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F04Bprimary
F04BPositive-displacement machines for liquids50%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests42%
F25BRefrigeration machines, plants or systems8%
PatentTitleYear
5,400,604'Cryopump and process for regenerating said cryopump'19954,953,359'Method of adapting a two-stage refrigerator cryopump to a specific gas'19904,757,689'Cryopump, and a method for the operation thereof'19884,614,093'Method of starting and/or regenerating a cryopump and a cryopump therefor'19864,475,345'Refrigerator with pneumatic and working gas-supply control'19844,408,469'Refrigerator cryostat'19834,121,430'Cryopump having improved heat radiation shielding'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1988Patents assigned to LEYBOLD HERAEUS GMBH & CO KG (5)· patent assignee history
1978–1988Based in Cologne, DE· patent location history
1990–1995Patents assigned to LEYBOLD AG (2)· patent assignee history
1990–1995Based in Koln, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LEYBOLD HERAEUS GMBH & CO KG | 5 | 1978–1988 |
| LEYBOLD AG | 2 | 1990–1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cologne, DE | 5 | 1978–1988 |
| Koln, DE | 2 | 1990–1995 |