Walter Heitz
31Patents
9h-index
33Co-inventors
75Inventor score
Filing activity: Jan 17, 1980 → Apr 22, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4677185A | Process for the preparation of bifunctional polyphenylene oxide | Chemistry; Metallurgy | 42 | Expired |
| US4605732A | Process for the production of polyarylene sulphides with functional end groups | Chemistry; Metallurgy | 27 | Expired |
| US4605713A | Process for the production of polyarylene sulphides with functional end groups | Chemistry; Metallurgy | 22 | Expired |
| US6784261B1 | Imidochromium compounds contained in catalyst systems for olefin polymerization | Chemistry; Metallurgy | 19 | Expired |
| US4521584A | Process for the production of bifunctional polyphenylene ethers | Chemistry; Metallurgy | 19 | Expired |
| US4525579A | Process for the production of optionally branched polyarylene sulphides with polyhalogenated polyaromatic compound | Chemistry; Metallurgy | 14 | Expired |
| US4327035A | Process for the preparation of carbonic acid esters | Chemistry; Metallurgy | 11 | Expired |
| US4487918A | Process for the production of bifunctional polyphenylene ethers | Chemistry; Metallurgy | 10 | Expired |
| US7045644B2 | Imidochromium compounds in catalyst systems for olefin polymerization | Chemistry; Metallurgy | 9 | Expired |
| US4473686A | Block copolymers | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4758652A | Process for preparing oligomers and telechels having carboxy-piperazine units, and new oligomers and telechels of poly(carboxypiperazine) | Chemistry; Metallurgy | 7 | Expired |
| US4686262A | Thermoplastic block copolyesters, a process for the preparation thereof and their use for the production of mouldings | Chemistry; Metallurgy | 7 | Expired |
| US4537951A | Process for the production of optionally branched polyarylene sulfides | Chemistry; Metallurgy | 7 | Expired |
| US4567226A | Elastomeric block copolyamides | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4874397A | Coal gasification process | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4331610A | Process for the preparation of carbonic acid esters | Chemistry; Metallurgy | 5 | Expired |
| US4769423A | Block copolymers of optionally substituted poly(oxy-1,4-phenylene) segments and liquid crystalline segments | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4696999A | Process for the production of polybenzamide with halide catalyst | Chemistry; Metallurgy | 4 | Expired |
| US4950737A | Catalytic/solvent preparation of vinylene copolymers from ethylene and haloaromatic compound | Chemistry; Metallurgy | 3 | Expired |
| US4946937A | Vinylene copolymer | Chemistry; Metallurgy | 3 | Expired |
| US4382131A | Thermoplastic block copolyesters, a process for their production and their use for the production of mouldings | Chemistry; Metallurgy | 3 | Expired |
| US5313001A | Process for the preparation of .alpha.-flurostyrene | Chemistry; Metallurgy | 2 | Expired |
| US4598143A | Process for the preparation of aromatic polyamide in the presence of SiCl.sub.4 | Chemistry; Metallurgy | 2 | Expired |
| US4412063A | Polytetrahydrofurans containing terminal acrylate or methacrylate groups | Chemistry; Metallurgy | 1 | Expired |
| US4835244A | Substituted aromatic polyesters | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.