Helmut Bechtel
19Patents
4h-index
23Co-inventors
56Inventor score
Filing activity: Jul 16, 1993 → Jul 14, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5998047A | Aluminate phosphor with a polyphosphate coating | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6753649B1 | Plasma picture screen with UV light reflecting front plate coating | Electricity | 9 | Expired |
| US6654079B2 | Liquid crystal color display screen comprising a phosphor layer | Physics | 8 | Expired |
| US7591962B2 | Low-pressure mercury vapor discharge lamp comprising UV-A phosphor | Chemistry; Metallurgy | 7 | Expired |
| US5739632A | Luminescent phosphor screen containing catena-polyphosphate | Electricity | 4 | Expired |
| US5360361A | Method of manufacturing a display tube | Electricity | 4 | Expired |
| US6509685B1 | Plasma display screen comprising a red phosphor | Electricity | 3 | Expired |
| US7800123B2 | Electroluminescence device | Electricity | 3 | Active |
| US5760542A | Color display device having short decay phosphors | Electricity | 3 | Expired |
| US5879795A | Luminescent screen containing phosphor particles coated with MoO.sub.3 | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8227758B2 | Device and method for determining the conversion power of conversion elements | Physics | 2 | Active |
| US7642714B2 | Electroluminescent device with a transparent cathode | Electricity | 2 | Expired |
| US7285909B2 | Electroluminescent device with a color filter | Electricity | 1 | Expired |
| US5936340A | Display screen comprising an adhesive layer | Electricity | 1 | Expired |
| US6469434B1 | Zinc silicate luminescent materials and related luminescent screen products | Chemistry; Metallurgy | 0 | Expired |
| US8164250B2 | Light emitting device with improved conversion layer | Electricity | 0 | Active |
| US7969089B2 | LED with improved light emission profile | Electricity | 0 | Expired |
| US7750357B2 | LED with improved light emittance profile | Electricity | 0 | Active |
| US5684358A | Luminescent screen | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.