Donald P. Specht
21Patents
12h-index
22Co-inventors
81Inventor score
Filing activity: Apr 21, 1976 → Aug 28, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4289844A | Photopolymerizable compositions featuring novel co-initiators | Emerging Cross-Sectional Technologies | 96 | Expired |
| US4743529A | Negative working photoresists responsive to shorter visible wavelengths and novel coated articles | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4147552A | Light-sensitive compositions with 3-substituted coumarin compounds as spectral sensitizers | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4886339A | Optical article containing a transmission medium exhibiting a high level of second order polarization susceptibility | Physics | 41 | Expired |
| US4743530A | Negative working photoresists responsive to longer wavelengths and novel coated articles | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4366228A | Photopolymerizable compositions featuring novel co-initiators | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4278751A | Photopolymerization co-initiator compositions comprising amine-substituted ketocoumarins and certain acetic acid derivative activators | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5155166A | Use of 1-(1-pyrrolidinylcarbonyl)pyridinium salts to attach compounds to carboxylated particles and a kit containing same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4743531A | Dye sensitized photographic imaging system | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4743528A | Enhanced imaging composition containing an azinium activator | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4415621A | Use of .alpha.,.alpha.-bis(dialkylaminobenzylidene) ketone dyes in optical recording elements | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4062686A | Sensitizers for photocrosslinkable polymers | Physics | 17 | Expired |
| US4119466A | Sensitizers for photocrosslinkable polymers | Physics | 11 | Expired |
| US4341894A | Sensitizers for photoconductive compositions | Physics | 9 | Expired |
| US5316902A | Modification of gelatin | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5219992A | Modification of gelatin | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4876175A | Dye sensitized photographic imaging systems | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4374194A | Dye imbibition photohardenable imaging material and process for forming positive dye images | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4167412A | Pyrylium sensitizers for photoconductive compositions | Physics | 1 | Expired |
| US5162219A | Preparation of amine-enriched proteins having an increased isoelectric point | Physics | 0 | Expired |
| US5635343A | Ultraviolet absorbing compounds and photographic elements containing them | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.