Spiro D. Alexandratos
14Patents
7h-index
14Co-inventors
59Inventor score
Filing activity: Jun 13, 1986 → May 7, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5281631A | Phosphonic acid based ion exchange resins | Performing Operations; Transporting | 69 | Expired |
| US5449462A | Phosphonic acid based exchange resins | Performing Operations; Transporting | 25 | Expired |
| US6059975A | Bifunctional anion-exchange resins with improved selectivity and exchange kinetics | Chemistry; Metallurgy | 12 | Expired |
| US5539003A | Phosphonic acid based ion exchange resins | Performing Operations; Transporting | 10 | Expired |
| US5256808A | Synthesis of tetraalkyl vinylidene diphosphonate monomer | Chemistry; Metallurgy | 9 | Expired |
| US5618851A | Grafted methylenediphosphonate ion exchange resins | Performing Operations; Transporting | 8 | Expired |
| US6232353A | Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same | Chemistry; Metallurgy | 7 | Expired |
| US6488859B2 | Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same | Chemistry; Metallurgy | 5 | Expired |
| US4664700A | Selective extraction of metal ions with polymeric extractants by ion exchange/redox | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4879316A | Interpenetrating polymer network ion exchange membranes and method for preparing same | Chemistry; Metallurgy | 5 | Expired |
| US5712347A | Grafted methylenediphosphonate ion exchange resins | Performing Operations; Transporting | 4 | Expired |
| US4894407A | Composition for extracting gold and silver anions from alkaline solutions and processes for making same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5442085A | Synthesis of tetraalkyl vinylidene diphosphonate monomer | Chemistry; Metallurgy | 1 | Expired |
| US5990336A | Synthesis and purification of zosteric acid | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.