The Welding Institute
51Patents
13Active
51Granted
45Portfolio score
Filing activity: Jan 24, 1975 → Oct 11, 2017 · 8 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5460317A | Friction welding | Performing Operations; Transporting | 326 | Expired |
| US5813592A | Friction stir welding | Performing Operations; Transporting | 151 | Expired |
| US4721947A | Welding monitor | Performing Operations; Transporting | 132 | Expired |
| US5469617A | Friction forming | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5262123A | Forming metallic composite materials by urging base materials together under shear | Physics | 62 | Expired |
| US4811887A | Friction welding | Performing Operations; Transporting | 42 | Expired |
| US4127761A | Laser welding | Performing Operations; Transporting | 41 | Expired |
| US6670571B2 | Surface modification | Performing Operations; Transporting | 39 | Expired |
| US7308747B2 | Method of positioning a platform relative to a fixed frame and a small scale positioning device | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4063676A | Friction welding methods and apparatus | Performing Operations; Transporting | 29 | Expired |
| US4959241A | Surfacing method | Performing Operations; Transporting | 28 | Expired |
| US4518844A | Short-circuit MIG welding | Performing Operations; Transporting | 28 | Expired |
| US4871412A | Bonding thermoplastic layers via electrical heating | Performing Operations; Transporting | 26 | Expired |
| US4098447A | Bonding method and apparatus | Electricity | 25 | Expired |
| US6698431B1 | Apparatus and method for supporting human body during itimate activity | Human Necessities | 24 | Expired |
| US4794259A | Charged particle collection | Electricity | 23 | Expired |
| US4603584A | Acoustic detection of defects in structures | Physics | 21 | Expired |
| US4323759A | Electrical inter-connection method | Electricity | 17 | Expired |
| US4605151A | Chuck assembly | Performing Operations; Transporting | 16 | Expired |
| US7667158B2 | Workpiece structure modification | Chemistry; Metallurgy | 14 | Expired |
| US4587395A | Bonding leads to semiconductor devices | Electricity | 13 | Expired |
| US4618760A | Shielded arc welding using auxiliary voltage | Performing Operations; Transporting | 11 | Expired |
| US5151571A | Electron beam welding | Performing Operations; Transporting | 11 | Expired |
| US5170031A | Joining method | Performing Operations; Transporting | 10 | Expired |
| US8205174B2 | Integrated circuit modeling method and framework tool | Physics | 8 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.