William J. Roberts
23Patents
10h-index
19Co-inventors
72Inventor score
Filing activity: Feb 27, 1976 → Jun 28, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5556369A | Exercise device | Emerging Cross-Sectional Technologies | 67 | Expired |
| US5176602A | Exercise device | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4921245A | Exercise device | Emerging Cross-Sectional Technologies | 55 | Expired |
| US5694688A | Method and apparatus for making paint roller cover | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4354466A | Idle speed controller | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5537745A | Method and apparatus for making paint roller cover with thermo plastic core | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6231711A | Methods and apparatus for making paint roller covers with thermoplastic cores | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4086888A | Electronic vacuum modulator for controlling air flow to a throttle modulator mechanism for limiting engine speed and vehicle speed | Performing Operations; Transporting | 13 | Expired |
| US4368717A | Automatic shut-off circuit for electronic ignition system | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4453626A | Vibratory feeding apparatus | Performing Operations; Transporting | 11 | Expired |
| US4459099A | Fuel and ignition control | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US9192189B1 | Beverage ice and related methods | Human Necessities | 7 | Active |
| US4465958A | Motor speed control circuit | Electricity | 6 | Expired |
| US4415328A | Fuel and ignition control | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4967037A | Driving circuit for a capacitor discharge ignition system | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US8595089B1 | System and method for predicting missing product ratings utilizing covariance matrix, mean vector and stochastic gradient descent | Physics | 4 | Active |
| US8576022B2 | Tuning a programmable power line filter | Electricity | 4 | Active |
| US4347819A | Ignition spark advance using a constant peak to peak amplitude timing signal with a frequency tied to engine speed | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6818668B2 | 5-alkyl-7-alkylcarbonate-isoflavone ester and related method | Human Necessities | 2 | Expired |
| US4706151A | Power limiter for electrical contacts | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4371833A | Speed switch | Physics | 0 | Expired |
| US6740646B2 | Bioavailable prodrugs of androgenic steroids and related method | Human Necessities | 0 | Expired |
| US7625943B2 | 5-alkyl-7-alkylcarbonate-isoflavone ester and related method | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.