Thomas G. Parham
27Patents
16h-index
33Co-inventors
81Inventor score
Filing activity: Dec 21, 1981 → Apr 17, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5526237A | Lighting system for increasing brightness to a light guide | Physics | 118 | Expired |
| US4638214A | Fluorescent lamp containing aluminate phosphor | Chemistry; Metallurgy | 52 | Expired |
| US5675677A | Lamp-to-light guide coupling arrangement for an electrodeless high intensity discharge lamp | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5143445A | Glass reflectors LPCVD coated with optical interference film | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US5627426A | Lamp with IR reflecting film and light-scattering coating | Electricity | 33 | Expired |
| US5196759A | High temperature lamps having UV absorbing quartz envelope | Electricity | 32 | Expired |
| US5587626A | Patterned optical interference coatings for only a portion of a high intensity lamp envelope | Electricity | 29 | Expired |
| US4949005A | Tantala-silica interference filters and lamps using same | Electricity | 28 | Expired |
| US5610469A | Electric lamp with ellipsoidal shroud | Electricity | 27 | Expired |
| US5723937A | Light-scattering coating, its preparation and use | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5552671A | UV Radiation-absorbing coatings and their use in lamps | Electricity | 20 | Expired |
| US5258689A | Fluorescent lamps having reduced interference colors | Electricity | 18 | Expired |
| US4388094A | Method and apparatus for producing tubular glass article | Chemistry; Metallurgy | 17 | Expired |
| US5952768A | Transparent heat conserving coating for metal halide arc tubes | Electricity | 16 | Expired |
| US5569979A | UV absorbing fused quartz and its use for lamp envelopes | Chemistry; Metallurgy | 16 | Expired |
| US5353210A | Reflector lamp with low UV emission | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5412274A | Diffusely reflecting optical interference filters and articles including lamps reflectors and lenses | Electricity | 14 | Expired |
| US6382816B1 | Protected coating for energy efficient lamp | Electricity | 13 | Expired |
| US5676579A | Patterned optical interference coatings for electric lamps | Electricity | 13 | Expired |
| US5578892A | Bug free linear quartz halogen lamp | Chemistry; Metallurgy | 13 | Expired |
| US4631144A | Aluminate phosphor | Chemistry; Metallurgy | 11 | Expired |
| US5402038A | Method for reducing molybdenum oxidation in lamps | Electricity | 10 | Expired |
| US5422534A | Tantala-silica interference filters and lamps using same | Electricity | 9 | Expired |
| US6773141B2 | Protected coating for energy efficient lamp | Electricity | 9 | Expired |
| US5536991A | Lamp having silica protective coating | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.