Manfred Melzig
41Patents
15h-index
15Co-inventors
78Inventor score
Filing activity: Mar 19, 1987 → Dec 21, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4852974A | Anti-reflection film for an optical element consisting of an organic material | Physics | 64 | Expired |
| US6146554A | Photochromic naphtopyrane colorants, method for the production and use thereof, photochromic object | Physics | 55 | Expired |
| US5952515A | Diaryl-2h-napthopyrans | Chemistry; Metallurgy | 54 | Expired |
| US6102543A | Photochromically colored object | Physics | 53 | Expired |
| US6036890A | Diaryl-2H-naphthopyrans | Chemistry; Metallurgy | 51 | Expired |
| US6171525A | Process for the production of a photochromic object | Physics | 49 | Expired |
| US5498686A | Optically transparent photochromic plastic material | Physics | 31 | Expired |
| US6683709B2 | Photochromic pyran compounds | Chemistry; Metallurgy | 29 | Expired |
| US6373615B1 | Neutral-colored gray photochromic plastic object | Physics | 28 | Expired |
| US5707557A | Photochromic 3H-naphthopyrans | Physics | 22 | Expired |
| US6315928A | Spirofluorenopyrans | Physics | 21 | Expired |
| US6225466A | Photochromic spirofluorenopyran compounds | Physics | 21 | Expired |
| US4959471A | Photochrome spiroindoline-oxazines | Chemistry; Metallurgy | 20 | Expired |
| US6306316A | Photochromic plastic object | Physics | 18 | Expired |
| US6190580A | Diaryl-2H-naphthopyrans | Chemistry; Metallurgy | 15 | Expired |
| US6660727B1 | Photochromic heterocyclically anellated indenochromene compounds | Physics | 15 | Expired |
| US5645768A | Photochromic compounds | Chemistry; Metallurgy | 13 | Expired |
| US5637709A | Photochromatic substances | Chemistry; Metallurgy | 12 | Expired |
| US5801243A | Photochromic compounds (7) | Physics | 11 | Expired |
| US6342459B1 | Photochromic naphthopyrans | Physics | 9 | Expired |
| US4927239A | Anti-reflection film for an optical element consisting of an organic material | Physics | 9 | Expired |
| US5399687A | Photochrome alkyl substituted spiroindoline compounds | Physics | 9 | Expired |
| US7459555B2 | Photochromic naphthopyrans | Physics | 8 | Expired |
| US6933325B2 | High index curable photochromic composition and its process | Chemistry; Metallurgy | 5 | Expired |
| US5990305A | Photochromic diaryl-3H-naphthopyrane | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.