Richard M. Haddock
19Patents
7h-index
6Co-inventors
59Inventor score
Filing activity: Feb 17, 1984 → Jan 27, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7131574B1 | Optical memory card based e-commerce business method | Physics | 51 | Expired |
| US4711347A | Protective envelope for optical data card | Human Necessities | 41 | Expired |
| US4700840A | Data card cassette | Physics | 40 | Expired |
| US4818852A | Method for forming data cards with registered images | Physics | 23 | Expired |
| US4820913A | Multiple card recording system | Physics | 13 | Expired |
| US7916281B2 | Apparatus for producing optical signatures from coinage | Physics | 9 | Active |
| US4524925A | Optical data tape cartridge having wide angle read/write surface | Physics | 7 | Expired |
| US4736966A | Data card with peelable protective layers | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4692402A | Ultrathin optical recording medium with moisture barrier | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7140540B2 | Method of making secure personal data card | Electricity | 4 | Expired |
| US4543307A | Optical data storage and recording media having recording surface protection | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6550676B2 | Hybrid card contact actuator system and method | Physics | 3 | Expired |
| US4912312A | Optical card duplicating system | Physics | 2 | Expired |
| US8820639B2 | Security feature RFID card | Physics | 2 | Active |
| US4623784A | Laser recording apparatus with off-center lens and error detection | Physics | 2 | Expired |
| US5089693A | Reader/writer for arcuately flexed data cards | Physics | 2 | Expired |
| US9085119B2 | Partitioned game card holder using monocoque construction | Human Necessities | 1 | Active |
| US7967126B2 | Self-centering loading, indexing, and flipping mechanism for coinage and coin analysis | Physics | 0 | Active |
| US8023121B2 | Method for optically collecting numismatic data and associated algorithms for unique identification of coins | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.