Fred D. Ehrman
21Patents
9h-index
26Co-inventors
71Inventor score
Filing activity: Oct 15, 2002 → Sep 7, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6753390B2 | Gas phase polymerization process | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6828395B1 | Polymerization process and control of polymer composition properties | Chemistry; Metallurgy | 43 | Expired |
| US6878454B1 | Polyethylene films | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7238756B2 | Polymerization process and control of polymer composition properties | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7595364B2 | High density polyethylene | Chemistry; Metallurgy | 19 | Active |
| US6833416B2 | Methods of polymerizing olefin monomers with mixed catalyst systems | Chemistry; Metallurgy | 14 | Expired |
| US6875828B2 | Bimodal polyolefin production process and films therefrom | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7855253B2 | High density polyethylene and articles made therefrom | Chemistry; Metallurgy | 12 | Active |
| US7393916B2 | Method of reducing gels in polyolefins | Chemistry; Metallurgy | 9 | Expired |
| US7090927B2 | Polyethylene films | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6943134B2 | Bimodal polyolefin production process and films therefrom | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7838605B2 | Polymerization monitoring and control using improved leading indicators | Chemistry; Metallurgy | 5 | Active |
| US7101629B2 | Polyethylene films | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6995235B1 | Methods of producing polyolefins and films therefrom | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7585923B2 | Polymerization monitoring and method of selecting leading indicators | Chemistry; Metallurgy | 4 | Active |
| US6833417B2 | Processes for transitioning between chrome-based and mixed polymerization catalysts | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8058366B2 | Polymerization monitoring and method of selecting leading indicators | Chemistry; Metallurgy | 1 | Active |
| US6870023B2 | Reactor wall coating and processes | Chemistry; Metallurgy | 0 | Expired |
| US10377841B2 | Polymerization process | Chemistry; Metallurgy | 0 | Active |
| US11274170B2 | Polymerization process | Chemistry; Metallurgy | 0 | Active |
| US7799877B2 | Polymerization monitoring and control using leading indicators | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.