Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10737994 | Acetone purification systems and methods | Syed Azhar Hashmi, Flaiyh Al-Anazi | 2020-08-11 |
| 10005884 | Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines | Anup Krishnnan Appukuttan Pillai, Shivakumar Konda, Gaurav Mediratta, Venkata Rama Narayanan Ganapathy Bhotla, Pradeep Nadkarni | 2018-06-26 |
| 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, Kishan Gurram, Arun Kumar, Shubashree Swaminathan | 2016-05-17 |
| 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, Kishan Gurram, Kumar Arun Satyanarayana, Swaminathan Shubashree | 2014-08-19 |
| 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, Kishan Gurram, Kumar Arun Satyanarayana, Swaminathan Shubashree | 2012-08-21 |
| 7915430 | Catalytic method for producing phenolphthalein compounds | Venkata Rama Narayanan Ganapathy Bhotla, Shivappa Basappa Halligudi, Gurram Kishan, Bhaskar Veldurthy | 2011-03-29 |
| 7868190 | Method for producing phenolphthalein using a heteropolyacid catalyst | Venkata Rama Narayanan Ganapathy Bhotla, Shivappa Basappa Halligudi, Gurram Kishan, Bhaskar Veldurthy | 2011-01-11 |
| 7838689 | Method for producing phenolphthalein compound using ionic liquid catalyst composition | Venkata Rama Narayanan Ganapathy Bhotla, Dwairath Dhar, Gurram Kishan | 2010-11-23 |