Won S. Kwak
7Patents
7h-index
3Co-inventors
48Inventor score
Filing activity: Jul 30, 1984 → Jun 12, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4637698A | Photochromic compound and articles containing the same | Physics | 180 | Expired |
| US4816584A | Photochromic spiro(indoline)benzoxazines | Physics | 156 | Expired |
| US4931219A | Photochromic compound and articles containing the same | Chemistry; Metallurgy | 118 | Expired |
| US4785097A | Method for synthesizing spiro-oxazines | Chemistry; Metallurgy | 28 | Expired |
| US4720547A | Photochromic compound and articles containing the same | Physics | 23 | Expired |
| US4831142A | Spiro indoline-pyranobenzoxazinones | Chemistry; Metallurgy | 14 | Expired |
| US4909963A | Photochromic article | Physics | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.