Daniel L. Comins
43Patents
9h-index
14Co-inventors
72Inventor score
Filing activity: Dec 20, 1990 → Sep 2, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5162532A | Intermediates and method of making camptothecin and camptothecin analogs | Chemistry; Metallurgy | 37 | Expired |
| US6995265B2 | Synthesis of nicotine derivatives from nicotine | Chemistry; Metallurgy | 19 | Expired |
| US5191082A | Camptothecin intermediate and method of making camptothecin intermediates | Chemistry; Metallurgy | 16 | Expired |
| US5243050A | Alkylpyridone DE ring intermediates useful for the manufacture of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 15 | Expired |
| US5247089A | Method of making intermediates useful for the manufacture of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 15 | Expired |
| US5212317A | Methods and intermediates for the assymmetric synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 14 | Expired |
| US5321140A | Pyridinecarboxaldehyde D-ring intermediates useful for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 11 | Expired |
| US5200524A | Camptothecin intermediates and method of making same | Chemistry; Metallurgy | 11 | Expired |
| US6063923A | Preparation of a camptothecin derivative by intramolecular cyclisation | Chemistry; Metallurgy | 11 | Expired |
| US5258516A | Optically pure D,E ring intermediates useful for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 8 | Expired |
| US5459269A | 14-halo-camptothecins | Chemistry; Metallurgy | 6 | Expired |
| US5315007A | Process for making DE ring intermediates for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 6 | Expired |
| US5264579A | D ring intermediates for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 6 | Expired |
| US5254690A | Alkoxymethylpyridine d-ring intermediates useful for the synthesis of camptpthecin and camptothecin analogs | Electricity | 6 | Expired |
| US5475108A | Camptothecin intermediates and method of making camptothecin and comptothecin analogs | Chemistry; Metallurgy | 5 | Expired |
| US7067672B2 | Regioselective halogenation of nicotine and substituted nicotines | Chemistry; Metallurgy | 5 | Expired |
| US5262571A | Cycloalkyl-based chiral auxiliaries and method making the same | Chemistry; Metallurgy | 4 | Expired |
| US7132545B2 | Synthesis of nicotine derivatives from nicotine | Chemistry; Metallurgy | 4 | Expired |
| US7501520B2 | Regioselective halogenation of nicotine and substituted nicotines | Chemistry; Metallurgy | 3 | Active |
| US5428166A | Method of making asymmetric de ring intermediates for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 3 | Expired |
| US5395939A | Method of making asymmetric de ring intermediates for the synthesis of camptothecin and camptothecin analogs | Chemistry; Metallurgy | 3 | Expired |
| US7179917B2 | Regioselective halogenation of nicotine and substituted nicotines | Chemistry; Metallurgy | 2 | Expired |
| US7304160B2 | Regiospecific synthesis of nicotine derivatives | Chemistry; Metallurgy | 2 | Active |
| US7112678B2 | Regiospecific synthesis of nicotine derivatives | Chemistry; Metallurgy | 2 | Expired |
| US5478943A | Method of making intermediates for camptothecin and its analogs | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.