David Colvin
109Patents
23h-index
17Co-inventors
87Inventor score
Filing activity: Oct 14, 1977 → Jul 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6044471A | Method and apparatus for securing software to reduce unauthorized use | Physics | 275 | Expired |
| US6799277B2 | System and method for monitoring software | Physics | 168 | Expired |
| US6785825B2 | Method for securing software to decrease software piracy | Physics | 152 | Expired |
| US6502195B1 | Computer readable storage medium for providing repeated contact with software end-user | Physics | 122 | Expired |
| US6446211B1 | Method and apparatus for monitoring software using encryption | Physics | 116 | Expired |
| US6857078B2 | Method for securing software to increase license compliance | Physics | 110 | Expired |
| US6795925B2 | Computer readable storage medium for providing repeated contact with software end-user | Physics | 105 | Expired |
| US6484264B1 | Method for providing repeated contact with software end-user using authorized administrator | Physics | 104 | Expired |
| US6792548B2 | Method for providing repeated contact with software end-user using authorized administrator | Physics | 101 | Expired |
| US6813718B2 | Computer readable storage medium for securing software to reduce unauthorized use | Physics | 100 | Expired |
| US6986063B2 | Method for monitoring software using encryption including digital signatures/certificates | Physics | 97 | Expired |
| US6813717B2 | Method for securing software to reduce unauthorized use | Physics | 96 | Expired |
| US6792549B2 | Method and apparatus for repeated contact of software end-user | Physics | 96 | Expired |
| US5626062A | Socket and ratchet wrench | Performing Operations; Transporting | 70 | Expired |
| US4631988A | Reversible ratchet wrench including detent mechanism | Performing Operations; Transporting | 54 | Expired |
| US4930378A | Wrench opening engagement surface configuration | Performing Operations; Transporting | 52 | Expired |
| USD974472S1 | Electronic gaming machine display | General | 52 | Active |
| US4485700A | Reversible ratchet wrench | Performing Operations; Transporting | 49 | Expired |
| US4903554A | Reversible ratchet wrench with thin head construction | Performing Operations; Transporting | 47 | Expired |
| US6460142B1 | Method and apparatus for repeated contact software end-user | Physics | 41 | Expired |
| US4598616A | Wrench opening | Performing Operations; Transporting | 39 | Expired |
| US5181773A | Vehicle occupant restraint belt buckle including illumination | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US4663999A | Socket including adjustable jaws | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD428004S | Electronic device | General | 21 | Expired |
| USD847906S1 | Gaming machine signage | General | 21 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.