Calspan Corporation
91Patents
2Active
91Granted
40Portfolio score
Filing activity: Apr 19, 1973 → Jun 21, 2006 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5659626A | Fingerprint identification system | Physics | 139 | Expired |
| US5799098A | Fingerprint identification system | Physics | 122 | Expired |
| US4485490A | Apparatus for treating casualties in a contaminated area | Human Necessities | 117 | Expired |
| US5926555A | Fingerprint identification system | Physics | 115 | Expired |
| US4120585A | Fingerprint identification system using a pliable optical prism | Human Necessities | 91 | Expired |
| US4266999A | Catheter for long-term emplacement | Emerging Cross-Sectional Technologies | 84 | Expired |
| US4309620A | Flywheel electric transmission apparatus | Emerging Cross-Sectional Technologies | 75 | Expired |
| US4015240A | Pattern recognition apparatus | Physics | 69 | Expired |
| US4684247A | Target member for use in a positioning system | Physics | 62 | Expired |
| US4536690A | Tool-supporting self-propelled robot platform | Physics | 61 | Expired |
| US4678329A | Automatically guided vehicle control system | Physics | 52 | Expired |
| US4215977A | Pulse-free blower | Mechanical Engineering; Lighting; Heating | 50 | Expired |
| US4136010A | Catch basin interceptor | Fixed Constructions | 49 | Expired |
| US4072942A | Apparatus for the detection of buried objects | Physics | 46 | Expired |
| US4012301A | Method and apparatus for the initiation of chemical reactions | Performing Operations; Transporting | 44 | Expired |
| US5080681A | Hand with conformable grasp | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4932541A | Stabilized shipboard crane | Performing Operations; Transporting | 35 | Expired |
| US4034673A | Armor penetration shaped-charge projectile | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US5381156A | Multiple target doppler tracker | Physics | 28 | Expired |
| US4485806A | Method and apparatus for evacuating contaminated casualties | Human Necessities | 23 | Expired |
| US3993888A | Scanning line filter | Human Necessities | 23 | Expired |
| US3992109A | Cyclic colorimetry method and apparatus | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4752226A | Chemical warfare simulator | Physics | 22 | Expired |
| US4353259A | Fiber optic acceleration sensor | Physics | 19 | Expired |
| US4485489A | Entrance and egress system for protective shelters and garments | Fixed Constructions | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.