Ralph C. Merkle
38Patents
15h-index
39Co-inventors
81Inventor score
Filing activity: Sep 6, 1977 → Nov 22, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4200770A | Cryptographic apparatus and method | Electricity | 1,048 | Expired |
| US5634012A | System for controlling the distribution and use of digital works having a fee reporting mechanism | Electricity | 998 | Expired |
| US4218582A | Public key cryptographic apparatus and method | Electricity | 598 | Expired |
| US4309569A | Method of providing digital signatures | Electricity | 563 | Expired |
| US5003597A | Method and apparatus for data encryption | Electricity | 170 | Expired |
| US5157726A | Document copy authentication | Electricity | 155 | Expired |
| US6397261B1 | Secure token-based document server | Physics | 146 | Expired |
| US4881264A | Digital signature system and method based on a conventional encryption function | Electricity | 132 | Expired |
| US7400732B2 | Systems and methods for non-interactive session key distribution with revocation | Electricity | 64 | Expired |
| US6601102B2 | Secure token-based document server | Physics | 39 | Expired |
| US6330549A | Protected shareware | Physics | 37 | Expired |
| US8171568B2 | Positional diamondoid mechanosynthesis | Emerging Cross-Sectional Technologies | 22 | Active |
| US7225160B2 | Digital works having usage rights and method for creating the same | Emerging Cross-Sectional Technologies | 19 | Expired |
| US8276211B1 | Positional diamondoid mechanosynthesis | Emerging Cross-Sectional Technologies | 18 | Active |
| US6993655B1 | Record and related method for storing encoded information using overt code characteristics to identify covert code characteristics | Physics | 17 | Expired |
| US9244097B1 | Mechanosynthetic tools for a atomic-scale fabrication | Physics | 11 | Active |
| US7269576B2 | Content rendering apparatus | Emerging Cross-Sectional Technologies | 10 | Expired |
| US10197597B2 | Build sequences for mechanosynthesis | Physics | 9 | Active |
| US9676677B2 | Build sequences for mechanosynthesis | Chemistry; Metallurgy | 9 | Active |
| US10309985B2 | Build sequences for mechanosynthesis | Physics | 8 | Active |
| US10138172B2 | Methods, systems and workpieces using mechanosynthesis | Performing Operations; Transporting | 8 | Active |
| US10308514B2 | Systems and methods for the manufacture of atomically-precise products | Performing Operations; Transporting | 7 | Active |
| US5357548A | Reversible charge transfer and logic utilizing them | Electricity | 6 | Expired |
| US10481866B2 | Mechanical computing systems | Electricity | 6 | Active |
| US10067160B2 | Sequential tip systems and methods for positionally controlled chemistry | Physics | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.