John D. Hottovy
85Patents
20h-index
69Co-inventors
91Inventor score
Filing activity: Jan 17, 1979 → Sep 27, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6239235A | High solids slurry polymerization | Chemistry; Metallurgy | 524 | Expired |
| US5565175A | Apparatus and method for producing ethylene polymer | Performing Operations; Transporting | 508 | Expired |
| US6262191A | Diluent slip stream to give catalyst wetting agent | Emerging Cross-Sectional Technologies | 481 | Expired |
| US5183866A | Polymer recovery process | Chemistry; Metallurgy | 60 | Expired |
| US6042790A | Apparatus for maintaining unreacted monomer concentration in a polymerization reactor | Performing Operations; Transporting | 41 | Expired |
| US6815511B2 | Continuous withdrawal from high solids slurry polymerization | Chemistry; Metallurgy | 39 | Expired |
| US5387659A | Flash gas sampling for polymerization reactions | Chemistry; Metallurgy | 37 | Expired |
| US7033545B2 | Slurry polymerization reactor having large length/diameter ratio | Chemistry; Metallurgy | 35 | Expired |
| US7615596B2 | Multiple component feed methods and systems | Emerging Cross-Sectional Technologies | 33 | Active |
| US4211863A | Polymer slurry catalyst residue deactivation | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7014821B2 | Pumping apparatus for slurry polymerization in loop reactors | Chemistry; Metallurgy | 31 | Expired |
| US7524904B2 | Process and apparatus for separating polymer solids, hydrocarbon fluids, and purge gas | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6051631A | Process for treating fluid streams | Chemistry; Metallurgy | 25 | Expired |
| US7109290B2 | Polymer transfer within a polymerization system | Performing Operations; Transporting | 24 | Expired |
| US7037980B2 | Monovinylarene/conjugated diene copolymers having lower glass transition temperatures | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7015289B2 | Process and apparatus for reducing take-off valve plugging in a polymerization process | Chemistry; Metallurgy | 23 | Expired |
| US8597582B2 | Flashline heater system and method | Performing Operations; Transporting | 22 | Active |
| US4676870A | Automatic control of a multiple-effect evaporator | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6114501A | Diluent recycle process | Chemistry; Metallurgy | 21 | Expired |
| US6743869B2 | High polymer solids slurry polymerization employing 1-olefin comonomer | Chemistry; Metallurgy | 20 | Expired |
| US6806324B2 | High solids slurry polymerization using heat exchange to condense the flashed diluent | Chemistry; Metallurgy | 20 | Expired |
| US7005485B2 | Process for producing polyolefins | Chemistry; Metallurgy | 19 | Expired |
| US8017701B2 | Energy efficient polyolefin process | Chemistry; Metallurgy | 17 | Active |
| US7517947B2 | Polymer transfer within a polymerization system | Performing Operations; Transporting | 17 | Active |
| US7645841B2 | Method and system to reduce polymerization reactor fouling | Emerging Cross-Sectional Technologies | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.