Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9340502 | Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom | Venkata Rama Narayanan Ganapathy Bhotla, Balakrishnan Ganesan, Salkod Parameshwar Mallika, Arun Kumar, Shubashree Swaminathan | 2016-05-17 |
| 9056821 | Promoter catalyst system with solvent purification | Umesh Krishna Hasyagar, Rathinam Jothi Mahalingam, Paul Eijsbouts | 2015-06-16 |
| 8809486 | Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom | Venkata Rama Narayanan Ganapathy Bhotla, Balakrishnan Ganesan, Salkod Parameshwar Mallika, Kumar Arun Satyanarayana, Swaminathan Shubashree | 2014-08-19 |
| 8735634 | Promoter catalyst system with solvent purification | Umesh Krishna Hasyagar, Rathinam Jothi Mahalingam, Paul Eijsbouts | 2014-05-27 |
| 8247523 | Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom | Venkata Rama Narayanan Ganapathy Bhotla, Balakrishnan Ganesan, Salkod Parameshwar Mallika, Kumar Arun Satyanarayana, Swaminathan Shubashree | 2012-08-21 |