VAT Holding AG
144Patents
116Active
144Granted
55Portfolio score
Filing activity: Sep 8, 1989 → Feb 13, 2023 · 24 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6056266A | Device for closing an opening of a tank or a tubular conduit | Mechanical Engineering; Lighting; Heating | 73 | Expired |
| US5577707A | Slide valve | Mechanical Engineering; Lighting; Heating | 66 | Expired |
| US6629682B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 57 | Expired |
| US6416037B1 | Vacuum pipe | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US5379983A | Shut-off valves for pipelines | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US4921213A | Valve slide | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US10830360B2 | Seal of a vacuum valve and production method therefor | Mechanical Engineering; Lighting; Heating | 25 | Active |
| US6431518B1 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6899316B2 | Closure device for vacuum closure of at least one opening in a wall | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7134642B2 | Vacuum gate valve | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6494434B1 | Butterfly valve | Emerging Cross-Sectional Technologies | 17 | Expired |
| US8657256B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 16 | Active |
| US7011294B1 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5873562A | Control apparatus for controlling gas flow in a molecular region | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6367770B1 | Vacuum valve for separating two vacuum chambers | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6485007B1 | Diaphragm bellows device | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6685163B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6471181B2 | Suspension of a valve plate of a vacuum valve | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US7413162B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US7481417B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US7611122B2 | Closure device for the vacuum-tight closing of an opening in a wall | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US7762527B2 | Vacuum valve | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US6698719B2 | Seal arrangement for a vacuum valve | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US8827241B2 | Door for sealing an opening | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US6902145B2 | Regulating slide valve | Mechanical Engineering; Lighting; Heating | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.