William R. Roach
31Patents
17h-index
41Co-inventors
81Inventor score
Filing activity: Oct 22, 1975 → Nov 27, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5863502A | Parallel reaction cassette and associated devices | Emerging Cross-Sectional Technologies | 588 | Expired |
| US5882903A | Assay system and method for conducting assays | Chemistry; Metallurgy | 190 | Expired |
| US5337068A | Field-sequential display system utilizing a backlit LCD pixel array and method for forming an image | Physics | 141 | Expired |
| US5063378A | Scanned liquid crystal display with select scanner redundancy | Physics | 100 | Expired |
| US6228228A | Method of making a light-emitting fiber | Emerging Cross-Sectional Technologies | 99 | Expired |
| US6259838A | Linearly-addressed light-emitting fiber, and flat panel display employing same | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6274978A | Fiber-based flat panel display | Electricity | 48 | Expired |
| US4892391A | Method of arranging the cells within the pixels of a color alpha-numeric display device | Physics | 42 | Expired |
| US6259846A | Light-emitting fiber, as for a display | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4726659A | Display device having different alignment layers | Physics | 40 | Expired |
| US6541919B1 | Electrical interconnection of light-emitting fibers, and method therefor | Electricity | 39 | Expired |
| US6045753A | Deposited reagents for chemical processes | Chemistry; Metallurgy | 34 | Expired |
| US6370005B1 | Electrostatic sensing chuck using area matched electrodes | Electricity | 27 | Expired |
| US6063194A | Dry powder deposition apparatus | Performing Operations; Transporting | 26 | Expired |
| US4308337A | Uniform light exposure of positive photoresist for replicating spiral groove in plastic substrate | Physics | 25 | Expired |
| US4180830A | Depth estimation system using diffractive effects of the grooves and signal elements in the grooves | Physics | 23 | Expired |
| US6201518A | Continuous drive AC plasma display device | Physics | 23 | Expired |
| US4155098A | Groove depth estimation system using diffractive groove effects | Physics | 17 | Expired |
| US4236823A | Diffractometer for measuring signal depth and width | Physics | 15 | Expired |
| US4363118A | Sound carrier amplitude measurement system | Physics | 12 | Expired |
| US4306013A | Asymmetrical radiation exposure of spin coated photoresist to obtain uniform thickness coating used to replicate spiral grooves in plastic substrate | Physics | 12 | Expired |
| US4329575A | Video disc having a label for identifying material recorded thereon | Physics | 11 | Expired |
| US6303143A | Pharmaceutical product | Performing Operations; Transporting | 11 | Expired |
| US4013345A | Deformable mirror light valve and method of operating the same | Physics | 11 | Expired |
| US6560398B1 | Light-emitting fiber, and method for making same | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.