Walter Heckmann
38Patents
10h-index
103Co-inventors
78Inventor score
Filing activity: Mar 22, 1982 → Jun 10, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5331044A | Low temperature impact resistant, easily flowing, thermoplastic polyurethane elastomer compositions, a process for their preparation and their use | Chemistry; Metallurgy | 29 | Expired |
| US5525636A | Expandable styrene polymers | Chemistry; Metallurgy | 27 | Expired |
| US4567250A | Preparation of finely divided electrically conductive pyrrole polymers | Chemistry; Metallurgy | 25 | Expired |
| US6894112B1 | Thermally stable polyester molding materials | Chemistry; Metallurgy | 17 | Expired |
| US5354809A | Preparation of a curable molding material | Chemistry; Metallurgy | 17 | Expired |
| US5174867A | Preparation of electrically conductive, finely divided pyrrole polymers | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5019626A | Thermoplastic molding materials based on polyphenylene ethers and nylons | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5496864A | Expandable styrene polymers | Chemistry; Metallurgy | 13 | Expired |
| US6111012A | Polymer compositions for graft copolymer as well as mixtures thereof and thermoplastic compounds containing them | Chemistry; Metallurgy | 13 | Expired |
| US7671127B2 | Impact-modified thermoplastic molding compositions based on vinyl aromatic copolymers and polyamide | Chemistry; Metallurgy | 11 | Active |
| US5045623A | Transparent, steam sterilizable, noncellular polyurethane compositions a process for their preparation and their use especially for medicinal articles | Chemistry; Metallurgy | 10 | Expired |
| US5989630A | Polymers having more than one void | Chemistry; Metallurgy | 9 | Expired |
| US4435537A | Storage stable dispersions of aromatic polyesters in polyhydroxyl compounds and their preparation | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5026789A | Curable impact modified epoxy resin having stabilized multiphase morphology | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4939201A | Glass fiber reinforced thermoplastic molding compositions based on polyesters and graft polymers | Chemistry; Metallurgy | 9 | Expired |
| US4968731A | Glass fiber reinforced thermoplastic molding compositions based on polyesters and graft polymers | Chemistry; Metallurgy | 9 | Expired |
| US8197715B2 | Thermoplastic moulding compositions having improved ductility | Chemistry; Metallurgy | 8 | Active |
| US5326822A | Heat-curable molding material | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4590242A | Production of low-shrinkage nylon moldings | Chemistry; Metallurgy | 7 | Expired |
| US4421870A | Process for the preparation of cellular polyurethane elastomers based on 4,4'-diisocyanato-1,2-diphenylethane | Chemistry; Metallurgy | 7 | Expired |
| US6197869A | Non-flammable, thermoplastic moulded materials with improved anti-drip properties | Chemistry; Metallurgy | 6 | Expired |
| US8545953B2 | Hollow polystyrene body obtained by injection stretch blow moulding | Emerging Cross-Sectional Technologies | 6 | Active |
| US6051656A | Process for producing moulding compounds modified with acrylic rubber and moulding compounds thus obtained | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4560708A | Polyisocyanurate/polyurethane elastomers based on suspensions of crystalline polyesters and polyhydroxyl compounds | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5414043A | Curable molding material | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.