Martin Rickwood
14Patents
8h-index
14Co-inventors
69Inventor score
Filing activity: May 1, 1987 → Oct 20, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4913544A | Photochromic articles | Physics | 109 | Expired |
| US4851530A | Spiro-oxazine compounds | Chemistry; Metallurgy | 77 | Expired |
| US5623005A | Photochromic naphthopyran compounds | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7713452B2 | Compounds that absorb ultraviolet light, methods of their preparation and optical lenses containing them | Chemistry; Metallurgy | 16 | Active |
| US5520853A | Photochromic compounds | Chemistry; Metallurgy | 14 | Expired |
| US5833885A | Photochromic compounds | Physics | 13 | Expired |
| US5446151A | Photo reactive spiro-benzoxazine compounds | Physics | 12 | Expired |
| US5446150A | Photochromic spiroxazine compounds | Chemistry; Metallurgy | 12 | Expired |
| US5446149A | Bridged spiroxazine photochromic compounds | Physics | 2 | Expired |
| US7622526B2 | Thermoset material based on antiplasticizing polythiourethane and ophthalmic lens comprising an antiplasticized thermoset material | Physics | 1 | Expired |
| US7446228B2 | Thiophosphine compounds | Chemistry; Metallurgy | 1 | Active |
| US7732507B2 | Spirotetrathiocarbamates and spirooxothiocarbamates | Chemistry; Metallurgy | 0 | Active |
| US7378556B2 | Process for making thiophosphine compounds | Chemistry; Metallurgy | 0 | Active |
| US7129321B2 | Thiophosphine compounds and methods of making polymerizable compositions containing them and their use for making ophthalmic lenses | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.