Donald W. Combs
17Patents
6h-index
13Co-inventors
63Inventor score
Filing activity: Sep 29, 1983 → Jul 29, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6555536B2 | Biologically active 4H-benzo [1,4]oxazin-3-ones | Chemistry; Metallurgy | 17 | Expired |
| US7071333B2 | Triazolopurine-based tricyclic compounds and pharmaceutical compositions comprising same | Human Necessities | 12 | Expired |
| US4721784A | 6-benzoxazinyl-2,3,4,5-tetrahydropyridazin-3-ones | Chemistry; Metallurgy | 10 | Expired |
| US5081242A | 6-benzoxazinyl- and 6-benzothiazinyl 2,3,4,5-tetrahydropyridazin-3-ones | Chemistry; Metallurgy | 10 | Expired |
| US5684151A | 1-arylsulphonyl, arylcarbonyl and 1-arylphosphonyl-3-phenyl-1,4,5,6-tetrahydropyridazines | Chemistry; Metallurgy | 8 | Expired |
| US6172091A | 1,2-Disubstituted cyclopropanes | Chemistry; Metallurgy | 8 | Expired |
| US4963554A | 6,7-dimethoxy-1,2-dihydro-2-arylquinazoline-3-oxides | Chemistry; Metallurgy | 4 | Expired |
| US4766118A | 6-benzoxazinyl- and 6-benzothiazinyl-2,3,4,5-tetrahydropyridazin-3-ones and pharmaceutical use | Chemistry; Metallurgy | 4 | Expired |
| US5116837A | 2,9-dihydro-(6 or 7)-(3-oxo-2,3,4,5-tetrahydropyridazinyl)-pyrazolo [4,3-B]-1,4-benzoxazines | Human Necessities | 3 | Expired |
| US4639518A | Substituted quinazolinediones | Chemistry; Metallurgy | 3 | Expired |
| US5753655A | 1-arylsulphonyl, arylcarbonyl and arylthiocarbonyl pyridazino derivatives and methods of preparation | Chemistry; Metallurgy | 2 | Expired |
| US4745118A | Substituted quinazoline-3-oxides providing pharmacological activity | Chemistry; Metallurgy | 2 | Expired |
| US6908908B2 | Biologically active 4H-benzo [1,4] oxazin-3-ones | Chemistry; Metallurgy | 1 | Expired |
| US5221742A | Process for the preparation of 6-(3,4-dihydro-3-oxo-1,4(2H)-benzoxazin-7-yl)-2,3,4,5-tetrahydropyridazi n-3-ones | Chemistry; Metallurgy | 1 | Expired |
| US5030635A | 6-7-dimethoxy-1,2-dihydro-2-arylquinazoline-3-oxides | Chemistry; Metallurgy | 0 | Expired |
| US4617392A | 4-alkyl-5,6-methylenedioxy-2-1[H]-quinazolinones useful as cardiotonic agents | Chemistry; Metallurgy | 0 | Expired |
| US5326765A | 2,2,4-trialkyl-1,2-dihydroquinazoline-3-oxides | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.