David Sperduti
32Patents
20h-index
31Co-inventors
85Inventor score
Filing activity: Dec 7, 1990 → Sep 22, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8544737B2 | Terminal including imaging assembly | Physics | 562 | Active |
| US8615487B2 | System and method to store and retrieve identifier associated information content | Physics | 549 | Active |
| US8561895B2 | Terminal including imaging assembly | Physics | 546 | Active |
| US8967468B2 | Terminal including imaging assembly | Physics | 482 | Active |
| US9734493B2 | Terminal including imaging assembly | Physics | 110 | Active |
| US7748620B2 | Transaction terminal including imaging module | Physics | 107 | Active |
| US5323871A | Rotary actuation mechanism for torque modulated transfer case | Performing Operations; Transporting | 106 | Expired |
| US7121470B2 | Transaction terminal having elongated finger recess | Physics | 101 | Expired |
| US5363938A | Power transfer system for a four-wheel drive vehicle | Performing Operations; Transporting | 59 | Expired |
| US5411110A | Power transfer system for a four-wheel drive vehicle | Performing Operations; Transporting | 54 | Expired |
| US7451917B2 | Transaction terminal comprising imaging module | Physics | 53 | Expired |
| US5651749A | Full-time transfer case with synchronized dual planetary gear reduction unit | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US5330030A | Two-speed transfer case with electronic torque modulation | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5332060A | Linear actuation mechanism for electronically-controlled torque modulated transfer case | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US5215160A | Part-time on-demand transfer case and method | Performing Operations; Transporting | 31 | Expired |
| US5582263A | Full-time four wheel drive transfer case | Performing Operations; Transporting | 29 | Expired |
| US7472825B2 | Transaction terminal | Physics | 24 | Expired |
| US5275253A | Part-time transfer case with traction control | Performing Operations; Transporting | 22 | Expired |
| US5720688A | Full-time transfer case with synchronized dual planetary gear reduction unit | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5275252A | Part-time transfer case with traction control | Performing Operations; Transporting | 20 | Expired |
| US8407097B2 | Proximity transaction apparatus and methods of use thereof | Physics | 16 | Active |
| US5377800A | Hydraulically-actuated shift system for a transfer case | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5655618A | Torque modulated transfer case | Performing Operations; Transporting | 13 | Expired |
| US5400866A | Torque modulated transfer case | Performing Operations; Transporting | 13 | Expired |
| US5105900A | Transfer case cold shift assist | Performing Operations; Transporting | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.