Bernard Mark Heron
11Patents
3h-index
19Co-inventors
53Inventor score
Filing activity: Nov 1, 1999 → Jan 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6248264A | Neutral coloring photochromic 2H-naphtho[1,2-b] pyrans and heterocyclic pyrans | Chemistry; Metallurgy | 19 | Expired |
| US6303673A | Photochromic compounds | Physics | 15 | Expired |
| US6294112A | Red coloring hyperchromic 3H-naphtho[2,1-B]pyrans | Chemistry; Metallurgy | 15 | Expired |
| US6387512B1 | Grey coloring photochromic fused pyrans | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8703978B2 | Photochromic dichroic naphtho-pyrans and optical articles containing them | Chemistry; Metallurgy | 2 | Active |
| US8436184B2 | 6-(biphenyl-ester)-3H-naphtho[2,1-b]pyrans as photochromic dichroic dyes and optical article containing them | Chemistry; Metallurgy | 1 | Active |
| US9823534B2 | Electrochromic single and two-core viologens and optical articles containing them | Physics | 1 | Active |
| US10563120B2 | Electrochromic compounds and optical articles containing them | Physics | 1 | Active |
| US9249136B2 | 3H-naphtho [2,1-B] pyrans as photochromic dichroic dyes and optical article containing them | Chemistry; Metallurgy | 0 | Active |
| US10179768B2 | Electrochromic two-core viologen derivatives and optical articles containing them | Physics | 0 | Active |
| US10730855B2 | Electrochromic compounds and optical articles containing them | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.