John G. Hefner
10Patents
6h-index
4Co-inventors
55Inventor score
Filing activity: Jan 11, 1989 → Apr 16, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5045517A | Catalyst and process for preparation of syndiotactic polystyrene | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5196490A | Process for preparation of syndiotactic polystyrene | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4892914A | Catalysts prepared from tetrakis(dialkylamide or diarylamide) derivatives of titanium and polymerization of olefins therewith | Chemistry; Metallurgy | 10 | Expired |
| US5312938A | Homogeneous catalysts and olefin polymerization process | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4956323A | Catalysts prepared from tetrakis(dialkylamide or diarylamide) derivatives of titanium and polymerization of olefins therewith | Chemistry; Metallurgy | 7 | Expired |
| US5565547A | Catalyst for the preparation of linear carbon monoxide/alpha-olefin copolymers | Performing Operations; Transporting | 6 | Expired |
| US5194532A | Homogeneous catalysts and olefin polymerization process | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5554777A | Catalyst for the preparation of linear carbon monoxide/alpha-olefin copolymers | Performing Operations; Transporting | 4 | Expired |
| US6239250A | Hot melt adhesives produced from linear alternating polyketones | Emerging Cross-Sectional Technologies | 3 | Expired |
| USPP9096P | Hybrid tea rose plant named Classic Touch | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.