David P. Waller
62Patents
10h-index
62Co-inventors
81Inventor score
Filing activity: Aug 27, 1973 → Jan 21, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5243052A | Mixed carbonate ester derivatives of quinophthalone dyes and their preparation | Chemistry; Metallurgy | 37 | Expired |
| US5401619A | Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein | Physics | 24 | Expired |
| US5278031A | Process for thermochemical generation of squaric acid and for thermal imaging, and imaging medium for use therein | Physics | 23 | Expired |
| US5350870A | Thermal imaging methods and materials | Chemistry; Metallurgy | 20 | Expired |
| US5667943A | Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein | Physics | 15 | Expired |
| US7572396B2 | Patterned photovoltaic cell | Emerging Cross-Sectional Technologies | 14 | Active |
| US5294375A | Thermochromic materials | Chemistry; Metallurgy | 13 | Expired |
| US5534393A | Process for thermochemical generation of acid and for thermal imaging | Physics | 13 | Expired |
| US7466376B2 | Photovoltaic cell | Emerging Cross-Sectional Technologies | 12 | Active |
| US7329709B2 | Photoactive materials and related compounds, devices, and methods | Emerging Cross-Sectional Technologies | 11 | Expired |
| US9337358B2 | Photovoltaic cell with benzodithiophene-containing polymer | Emerging Cross-Sectional Technologies | 10 | Active |
| US5319143A | Bis(aminoethanethiols) | Chemistry; Metallurgy | 9 | Expired |
| US4535051A | Photographic products and processes with color shifted dye | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5691458A | Benzoisothiazole azo dyes | Chemistry; Metallurgy | 8 | Expired |
| US5368979A | Thermally developable photosensitive element | Physics | 7 | Expired |
| US5236884A | Thermal imaging methods and materials | Chemistry; Metallurgy | 7 | Expired |
| US8227691B2 | Processing additives for fabricating organic photovoltaic cells | Emerging Cross-Sectional Technologies | 6 | Active |
| US7781673B2 | Polymers with low band gaps and high charge mobility | Emerging Cross-Sectional Technologies | 6 | Active |
| US9035015B1 | Photovoltaic cell containing novel photoactive polymer | Emerging Cross-Sectional Technologies | 6 | Active |
| US5415970A | Image-recording material | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5316887A | Thermally developable photosensitive material | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5192645A | Thermal imaging method | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7772485B2 | Polymers with low band gaps and high charge mobility | Emerging Cross-Sectional Technologies | 6 | Active |
| US4891298A | Photographic products and processes | Chemistry; Metallurgy | 5 | Expired |
| US5717079A | Color-providing compounds | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.