David Askin
32Patents
8h-index
64Co-inventors
78Inventor score
Filing activity: Jul 10, 1987 → May 11, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4820850A | Process for .alpha.-C-alkylation of the 8-acyl group on mevinolin and analogs thereof | Chemistry; Metallurgy | 51 | Expired |
| US5169952A | Stereoselective production of hydroxyamide compounds from chiral .alpha.-amino epoxides | Chemistry; Metallurgy | 23 | Expired |
| US5463067A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 11 | Expired |
| US5612484A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 9 | Expired |
| US9416110B2 | Process for making hydroxylated cyclopentylpyrimidine compounds | Emerging Cross-Sectional Technologies | 9 | Active |
| US6642237B1 | Gamma-hydroxy-2-(fluoroalkylaminocarbonyl)-1-piperazinepentanamides and uses thereof | Chemistry; Metallurgy | 9 | Expired |
| US9676730B2 | Process for making hydroxylated cyclopentylpyrimidine compounds | Emerging Cross-Sectional Technologies | 8 | Active |
| US4920218A | Novel hydroxide mediated FK-506 rearrangement process | Chemistry; Metallurgy | 8 | Expired |
| US6071916A | HIV protease inhibitor | Chemistry; Metallurgy | 8 | Expired |
| US5723615A | Process for preparing 4-tert-butyloxycarbonyl-(S)-piperazine-2-tert-butylcarboxamide | Chemistry; Metallurgy | 7 | Expired |
| US9790190B2 | Process for making hydroxylated cyclopentylpyrimidine compounds | Emerging Cross-Sectional Technologies | 6 | Active |
| US5728840A | Process for making an epoxide | Chemistry; Metallurgy | 6 | Expired |
| US5929243A | Process for the preparation of (S)-3-carbethoxy-3-benzylpiperidine | Chemistry; Metallurgy | 6 | Expired |
| US5491238A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 5 | Expired |
| US5663341A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 4 | Expired |
| US5618937A | Process to make HIV protease inhibitor from (2S)-4-picolyl-2-piperazine-t-butylcarboxamide | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7598264B2 | HIV integrase inhibitors | Human Necessities | 4 | Expired |
| US5618939A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 4 | Expired |
| US5637711A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 3 | Expired |
| US5496948A | Process for making HIV protease inhibitors | Chemistry; Metallurgy | 3 | Expired |
| US5508404A | Reductive amination process | Chemistry; Metallurgy | 2 | Expired |
| US6160118A | Process for the synthesis of substituted piperazinones via Mitsunobu reaction | Chemistry; Metallurgy | 2 | Expired |
| US5235066A | FK-506 type macrolide intermediate | Chemistry; Metallurgy | 1 | Expired |
| US5087703A | Process for synthesis of FK-506 intermediates | Chemistry; Metallurgy | 1 | Expired |
| US5446158A | Process for synthesis of FK-506 and tricarbonyl intermediates | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.