Ronald E. Karam
26Patents
6h-index
15Co-inventors
66Inventor score
Filing activity: May 28, 1974 → Oct 23, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5306441A | Method of preparing fluoroplogopite phosphor | Chemistry; Metallurgy | 16 | Expired |
| US5531928A | Phosphor and method of making same | Electricity | 15 | Expired |
| US5309071A | Zinc sulfide electroluminescent phosphor particles and electroluminescent lamp made therefrom | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5273774A | Method of making zinc sulfide electroluminescent phosphor particles | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4175959A | Precipitation of particulate trigonal selenium for use in electrophotography | Chemistry; Metallurgy | 10 | Expired |
| US3954464A | Method of fabricating a composite trigonal selenium photoreceptor | Physics | 7 | Expired |
| US5096614A | Process for producing a terbium-activated gadolinium oxysulfide X-ray phosphor wherein the green/blue emission ratio is controlled | Chemistry; Metallurgy | 5 | Expired |
| US5269966A | Method of making zinc sulfide precursor material for a copper-activated zinc sulfide electroluminescent phosphor | Chemistry; Metallurgy | 5 | Expired |
| US5531926A | Phosphor and method of making same | Chemistry; Metallurgy | 5 | Expired |
| US5489398A | Phosphor and method of making same | Electricity | 5 | Expired |
| US5582768A | Phosphor and method of making same | Electricity | 4 | Expired |
| US4006019A | Method for the preparation of an electrostatographic photoreceptor | Physics | 4 | Expired |
| US4695478A | Gray body colored zinc sulfide activated with copper | Chemistry; Metallurgy | 4 | Expired |
| US5716546A | Reduction of lag in yttrium tantalate x-ray phosphors | Chemistry; Metallurgy | 4 | Expired |
| US5431851A | Composite electroluminescent phosphor | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4681807A | Gray body colored zinc sulfide activated with copper | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5567352A | Phosphor and method of making same | Electricity | 3 | Expired |
| US5294368A | Method of making a composite electroluminescent phosphor | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5567351A | Phosphor and method of making same | Electricity | 2 | Expired |
| US5597511A | Phosphor and method of making same | Electricity | 1 | Expired |
| US5609792A | Phosphor and method of making same | Electricity | 1 | Expired |
| US5674430A | Lithium borosilicate phosphors | Chemistry; Metallurgy | 0 | Expired |
| US4388394A | Cadmium sulfide photoconductor blended with light-absorbing material | Physics | 0 | Expired |
| US5658495A | Mn-dope Na-Li-taenolite | Electricity | 0 | Expired |
| US5656199A | Terbium or europium activated highly charged fluoropholopite phosphor | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.