Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488859 | Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same | Christopher Shelley, E. Philip Horwitz, Renato Chiarizia, Michael J. Gula, Sui Xue +1 more | 2002-12-03 |
| 6232353 | Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same | Christopher Shelley, E. Philip Horwitz, Renato Chiarizia | 2001-05-15 |
| 6059975 | Bifunctional anion-exchange resins with improved selectivity and exchange kinetics | Gilbert M. Brown, Peter V. Bonnesen, Bruce A. Moyer | 2000-05-09 |
| 5990336 | Synthesis and purification of zosteric acid | — | 1999-11-23 |
| 5712347 | Grafted methylenediphosphonate ion exchange resins | Andrzej W. Trochimcznk, Ralph C. Gatrone, E. Philip Horwitz | 1998-01-27 |
| 5618851 | Grafted methylenediphosphonate ion exchange resins | Andrzej W. Trochimcznk, Ralph C. Gatrone, E. Philip Horwitz | 1997-04-08 |
| 5539003 | Phosphonic acid based ion exchange resins | E. Philip Horwitz, Ralph C. Gatrone, Ronato Chiarizia | 1996-07-23 |
| 5449462 | Phosphonic acid based exchange resins | E. Philip Horwitz, Ralph C. Gatrone, Ronato Chiarizia | 1995-09-12 |
| 5442085 | Synthesis of tetraalkyl vinylidene diphosphonate monomer | — | 1995-08-15 |
| 5281631 | Phosphonic acid based ion exchange resins | E. Philip Horwitz, Ralph C. Gatrone, Ronato Chiarizia | 1994-01-25 |
| 5256808 | Synthesis of tetraalkyl vinylidene diphosphonate monomer | — | 1993-10-26 |
| 4894407 | Composition for extracting gold and silver anions from alkaline solutions and processes for making same | Jan D. Miller | 1990-01-16 |
| 4879316 | Interpenetrating polymer network ion exchange membranes and method for preparing same | Pier R. Danesi, E. Philip Horwitz | 1989-11-07 |
| 4664700 | Selective extraction of metal ions with polymeric extractants by ion exchange/redox | — | 1987-05-12 |