Gurram Kishan
21Patents
5h-index
69Co-inventors
64Inventor score
Filing activity: Dec 12, 2002 → Jun 16, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7112702B2 | Process for the synthesis of bisphenol | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7563817B2 | Purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines | Chemistry; Metallurgy | 8 | Expired |
| US7790832B2 | Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines | Chemistry; Metallurgy | 7 | Active |
| US7041774B2 | Functionalized zeolite compositions and methods for their preparation and use | Performing Operations; Transporting | 5 | Expired |
| US7348439B2 | 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compounds and methods for making them | Chemistry; Metallurgy | 5 | Expired |
| US7915430B2 | Catalytic method for producing phenolphthalein compounds | Chemistry; Metallurgy | 4 | Active |
| US7838689B2 | Method for producing phenolphthalein compound using ionic liquid catalyst composition | Chemistry; Metallurgy | 4 | Active |
| US7514524B2 | Methods for producing and purifying 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers and polycarbonates derived therefrom | Chemistry; Metallurgy | 3 | Active |
| US7541417B2 | Process for the purification of dihydric phenols | Chemistry; Metallurgy | 3 | Active |
| US7868190B2 | Method for producing phenolphthalein using a heteropolyacid catalyst | Chemistry; Metallurgy | 3 | Active |
| US7592464B2 | Methods for producing and purifying 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers and polycarbonates derived therefrom | Chemistry; Metallurgy | 3 | Active |
| US7304189B2 | Methods for preparing 1,1,1-tris(4-hydroxyphenyl)alkanes | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7915332B2 | Compositions and methods for polymer composites | Chemistry; Metallurgy | 1 | Active |
| US7521505B2 | Method of stabilization of dihydric phenols | Chemistry; Metallurgy | 1 | Active |
| US7193027B2 | Functionalized silicone resins, methods for their preparation, and use as catalysts | Chemistry; Metallurgy | 0 | Expired |
| US7696388B2 | Process for producing bisphenol-A | Chemistry; Metallurgy | 0 | Active |
| US9169371B2 | Compositions having reduced frictional coefficient, method of manufacture thereof and articles comprising the same | Chemistry; Metallurgy | 0 | Active |
| US7473752B2 | Functionalized silicone resins, methods for their preparation, and use as catalysts | Chemistry; Metallurgy | 0 | Active |
| US7321069B2 | Process for preparing bisphenols | Chemistry; Metallurgy | 0 | Expired |
| US7015365B2 | Methods for preparing cycloalkylidene bisphenols | Chemistry; Metallurgy | 0 | Expired |
| US7528210B2 | Method of purification of dihydric phenols | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.