Richard E. Crandall
54Patents
16h-index
44Co-inventors
84Inventor score
Filing activity: Oct 2, 1974 → Apr 18, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8692830B2 | Automatic avatar creation | Human Necessities | 440 | Active |
| US5159632A | Method and apparatus for public key exchange in a cryptographic system | Physics | 135 | Expired |
| US5271061A | Method and apparatus for public key exchange in a cryptographic system | Physics | 93 | Expired |
| US5581616A | Method and apparatus for digital signature authentication | Physics | 72 | Expired |
| US6154542A | Method and apparatus for simultaneously encrypting and compressing data | Electricity | 59 | Expired |
| US5463690A | Method and apparatus for public key exchange in a cryptographic system | Physics | 55 | Expired |
| US4922925A | Computer based upper extremity evaluation system | Physics | 53 | Expired |
| US6587563B1 | Cryptographic system using chaotic dynamics | Electricity | 45 | Expired |
| US6307935A | Method and apparatus for fast elliptic encryption with direct embedding | Electricity | 45 | Expired |
| US8484236B1 | Method and/or system for processing data streams | Physics | 31 | Active |
| US6049610A | Method and apparatus for digital signature authentication | Physics | 31 | Expired |
| US5805703A | Method and apparatus for digital signature authentication | Physics | 29 | Expired |
| US8213389B2 | Location determination using formula | Physics | 25 | Active |
| US6998217B2 | Critical dimension edge placement and slope enhancement with central pixel dose addition and modulated inner pixels | Physics | 21 | Expired |
| US4321592A | Multiple sensor intrusion detection system | Physics | 20 | Expired |
| US6285760A | Method and apparatus for digital signature authentication | Physics | 16 | Expired |
| US7206001B1 | Fractal-dithering technique for image display | Physics | 15 | Expired |
| US7650507B2 | Small memory footprint fast elliptic encryption | Electricity | 14 | Active |
| US4048620A | Central station to addressed point communication system | Electricity | 13 | Expired |
| US7603560B2 | Method and apparatus for digital signature authentication | Physics | 10 | Active |
| US6751318B2 | Method and apparatus for digital signature authentication | Physics | 9 | Expired |
| US7587047B2 | Chaos generator for accumulation of stream entropy | Electricity | 8 | Active |
| US4221526A | Walkie low-lift truck with tiltable platen and rearwardly foldable load-supporting wheel struts | Performing Operations; Transporting | 7 | Expired |
| US4406426A | Secrecy-coded cassette | Physics | 6 | Expired |
| US6912323B2 | Method and apparatus for fast signal convolution using separated-spline kernel | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.