Peter C. Freund
21Patents
10h-index
22Co-inventors
75Inventor score
Filing activity: Nov 7, 1975 → Sep 6, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5825880A | Multi-step digital signature method and system | Physics | 330 | Expired |
| US8751391B2 | System and process for performing purchase transactions using tokens | Physics | 296 | Active |
| US5995625A | Electronic cryptographic packing | Physics | 212 | Expired |
| US5867578A | Adaptive multi-step digital signature system and method of operation thereof | Electricity | 207 | Expired |
| US6209091A | Multi-step digital signature method and system | Physics | 162 | Expired |
| US8630947B1 | Method and system for providing electronic bill payment and presentment | Physics | 41 | Active |
| US4263425A | Process for production of polyester polymer for food packing | Chemistry; Metallurgy | 19 | Expired |
| US5968982A | 2,2-Dichloroalkanecarboxylic acids, processes for their production and pharmaceutical agents containing these | Chemistry; Metallurgy | 14 | Expired |
| US5599826A | Thiazolidinediones and drugs containing them | Human Necessities | 12 | Expired |
| US8364967B2 | Multi-step digital signature method and system | Physics | 10 | Active |
| US10282536B1 | Method and system for performing purchase and other transactions using tokens with multiple chips | Physics | 3 | Active |
| US8560425B2 | Method and system for adding liquidity to alternative investment transactions | Physics | 2 | Active |
| US4128453A | Process and apparatus for removing evaporable components from polyamide melts | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4937337A | Substituted heterocyclic compounds and the pharmacologically acceptable salts thereof, processes for the preparation thereof and pharmaceutical compositions containing them | Chemistry; Metallurgy | 1 | Expired |
| US7606756B2 | Synthetic funds having structured notes | Emerging Cross-Sectional Technologies | 1 | Active |
| US8285625B2 | Synthetic funds having structured notes | Emerging Cross-Sectional Technologies | 1 | Active |
| US4069194A | Process for the solid state polycondensation of linear polyesters | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8756136B2 | Synthetic funds having structured notes | Emerging Cross-Sectional Technologies | 1 | Active |
| US4999361A | Trisubstituted amines, pharmacologically acceptable salts thereof and pharmaceutical compositions containing them | Chemistry; Metallurgy | 1 | Expired |
| US7610231B2 | Synthetic funds having structured notes | Emerging Cross-Sectional Technologies | 0 | Active |
| US8036973B2 | Synthetic funds having structured notes | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.