Kenneth M. Ryan
17Patents
6h-index
12Co-inventors
59Inventor score
Filing activity: Aug 8, 1979 → Apr 19, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4287123A | Synthesis of thienamycin via (3SR, 4RS)-3-((RS)-1-acyloxyethyl)-2-oxo-4-azetidineacetate | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4269772A | Synthesis of thienamycin via trans-3-carboxymethylene-4-carboxy-5-methyl-.DELTA..sup.2 -isoxazoline | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4282148A | Synthesis of thienamycin via esters of (3SR, 4RS)-3-[(SR)-1-hydroxyethyl]-.beta.,2-dioxo-4-azetidinebutanoic acid | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4473502A | Synthesis of thienamycin via (3SR, 4RS)-3-[1 (SR)-hydroxyethyl]-2-oxo-4-azetidineacetic acid | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4252722A | Process for the preparation of 6-hydroxymethyl-2-(.beta.-aminoethylthio)-1-carbadethiapen-2-em-3-carbox ylic acid | Chemistry; Metallurgy | 8 | Expired |
| US5449830A | Regiospecific processes to make CIS-1-Amino-2-Alkanol from Diol or Halohydrin | Chemistry; Metallurgy | 7 | Expired |
| US4360684A | Process for the preparation of (2S)-tetrahydro-2.alpha.-methyl-6-oxo-4.beta..alpha.-carboxylic acid | Chemistry; Metallurgy | 6 | Expired |
| US4414155A | Synthesis of thienamycin via esters of (3SR, 4RS)-3-[(SR)-1-hydroxyethyl]-.beta.,2-dioxo-4-azetidinebutanoic acid | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4349687A | Intermediate for synthesis of thienamycin via (3SR, 4RS)-3-[1 (SR)-hydroxyethyl]-2-oxo-4-azetidineacetic acid | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4344885A | Intermediate for the preparation of thienamycin | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5420353A | Regiospecific process to make cis-1-amino-2-alkanol from epoxide | Chemistry; Metallurgy | 5 | Expired |
| US4467107A | 1-Hydroxyethyl-2-amino pentanedioic acid derivatives | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4499278A | Trans-3-carboxymethylene-4-carboxy-5-methyl-delta2-isoxazoline as intermediate | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4454332A | Hydroxy amino dicarboxylic acids and esters | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5489710A | Regiospecific processes to make cis-1-amino-2-alkanol from diol | Chemistry; Metallurgy | 1 | Expired |
| US5087703A | Process for synthesis of FK-506 intermediates | Chemistry; Metallurgy | 1 | Expired |
| US4375433A | Process for the preparation of 6-hydroxymethyl-2-(.beta.-aminoethylthio)-1-carbadethiapen-2-em-3-carbox ylic acid | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.