Robert James Letchford
21Patents
8h-index
7Co-inventors
60Inventor score
Filing activity: Jun 5, 1996 → Mar 16, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6221991A | Methacrylate and acrylate polymers and processes for making same | Chemistry; Metallurgy | 27 | Expired |
| US6160054A | Hetero-telechelic polymers and processes for making same | Chemistry; Metallurgy | 26 | Expired |
| US6184338A | Anionic polymerization initiators containing tertiary amine functionality, their chain extended analogues, and processes for using the same | Chemistry; Metallurgy | 21 | Expired |
| US6703446B2 | Hetero-telechelic polymers and processes for making same | Chemistry; Metallurgy | 20 | Expired |
| US6197891A | Functionalized chain extended initiators for anionic polymerization | Chemistry; Metallurgy | 15 | Expired |
| US5919870A | Functional telechelic star polymers | Chemistry; Metallurgy | 14 | Expired |
| US6720391B2 | Functionalized initiators for anionic polymerization, protected functionalized polymers, deprotected analogues thereof, and methods of making the same | Chemistry; Metallurgy | 11 | Expired |
| US6271330A | Functionalized silicone polymers and processes for making the same | Chemistry; Metallurgy | 8 | Expired |
| US6107408A | Processes for improving linking efficiencies in the synthesis of star polymers | Chemistry; Metallurgy | 7 | Expired |
| US6020430A | Functionalized diene and alkenylsubstituted aromatic silicone copolymers and processes for making the same | Chemistry; Metallurgy | 7 | Expired |
| US5900464A | Processes for making methacrylate and acrylate polymers | Chemistry; Metallurgy | 6 | Expired |
| US6031060A | Functionalized silicone polymers and processes for making the same | Chemistry; Metallurgy | 6 | Expired |
| US6706821B1 | Michael addition products of amine terminated polyolefins and polyfunctional acrylates | Chemistry; Metallurgy | 6 | Expired |
| US6121474A | Amine anionic polymerization initiators and functionalized polymers derived therefrom | Chemistry; Metallurgy | 5 | Expired |
| US6344521B1 | Protected functionalized diene and alkenyl substituted aromatic silicone triblock copolymers and processes for making the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6153706A | Protected multi-functionalized star polymers and processes for making the same | Chemistry; Metallurgy | 3 | Expired |
| US6812295B2 | Functionalized initiators for anionic polymerization, protected functionalized polymers, deprotected analogues thereof, and methods of making the same | Chemistry; Metallurgy | 2 | Expired |
| US6545103B2 | Compositions providing improved functionalization of terminal anions and processes for improved functionalization of terminal anions | Chemistry; Metallurgy | 2 | Expired |
| US6858679B2 | Compositions providing improved functionalization of terminal anions and processes for improved functionalization of terminal anions | Chemistry; Metallurgy | 1 | Expired |
| US6699939B2 | Hetero-telechelic polymers and processes for making same | Chemistry; Metallurgy | 1 | Expired |
| US6605564B1 | Compositions providing improved functionalization of terminal anions and processes for improved functionalization of terminal anions | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.