Thomas J. Hamilton
20Patents
7h-index
9Co-inventors
62Inventor score
Filing activity: Jun 30, 1982 → Sep 30, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6070264A | Welding helmet having auto-darkening and manually adjustable lens shade control | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4516891A | Suspended type cellular void filler | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6881939B1 | Microprocessor based automatically dimmable eye protection device | Human Necessities | 10 | Expired |
| US5356251A | Collapsible void filling apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6815652B1 | Low power phototransistor-based welding helmet providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light | Physics | 8 | Expired |
| US6841772B1 | Eye-protection device having dual high voltage switching | Physics | 8 | Expired |
| US7026593B2 | Eye-protection device having dual high voltage switching | Physics | 8 | Expired |
| US7005624B2 | Low power phototransistor-based welding helmet providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light | Physics | 5 | Expired |
| US7358472B2 | Low power phototransistor-based welding helmet providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light | Physics | 4 | Active |
| US6884987B2 | Microprocessor based automatically dimmable eye protection device with interruption prevention | Human Necessities | 4 | Expired |
| US8119974B2 | Microprocessor based automatically dimmable eye protection device with interruption prevention | Human Necessities | 3 | Active |
| US6855922B2 | Low power phototransistor-based welding providing reduced sensitivity to low intensity light and sharp phototransistor response to high intensity light | Physics | 3 | Expired |
| US7232988B2 | Microprocessor based automatically dimmable eye protection device with interruption prevention | Human Necessities | 3 | Expired |
| US8264265B2 | Automatic darkening filter (ADF) eye protection device with improved drive circuitry | Human Necessities | 2 | Active |
| US7659495B2 | Auto darkening eye protection device having a regulated solar power supply | Physics | 1 | Active |
| US7446292B2 | Eye-protection device having dual high voltage switching | Physics | 1 | Expired |
| US7755019B1 | Microprocessor based automatically dimmable eye protection device with interruption prevention | Human Necessities | 1 | Active |
| US7750283B2 | Microprocessor based automatically dimmable eye protection device with interruption prevention | Human Necessities | 1 | Active |
| US7180047B2 | Eye-protection device having dual high voltage switching | Physics | 0 | Expired |
| US7868278B2 | Eye-protection device having dual high voltage switching | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.