Alfred Eitel
19Patents
11h-index
62Co-inventors
75Inventor score
Filing activity: Jul 17, 1974 → Apr 16, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3963679A | Process for the production of polyurethane elastomers | Chemistry; Metallurgy | 92 | Expired |
| US4261946A | Process for the production of thermoplastic polymer by introducing thermoplastic polymer into an extruder and adding organic polyisocyanate and chain lengthening agent | Chemistry; Metallurgy | 53 | Expired |
| US4342847A | Process for the production of thermoplastic synthetic materials | Chemistry; Metallurgy | 47 | Expired |
| US5395857A | Optimized ion exchanger beds for the synthesis of bisphenol A | Performing Operations; Transporting | 30 | Expired |
| US5302774A | Process for the production of bisphenols | Chemistry; Metallurgy | 30 | Expired |
| US5698600A | Process for the production of bisphenols with the use of new cocatalysts | Chemistry; Metallurgy | 27 | Expired |
| US5780690A | Bisphenol synthesis on modified ion-exchange resins using specially purified carbonyl compounds | Chemistry; Metallurgy | 22 | Expired |
| US5455282A | Process of regenerating sulfonic acid cation exchange resins with a mercaptoethylamine or thiazolidine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5785823A | Process for the purification of bisphenol | Chemistry; Metallurgy | 17 | Expired |
| US4250292A | Process for the preparation of polyurethane elastomers in which at least two reactant portions are introduced into separate positions of a screw machine | Performing Operations; Transporting | 13 | Expired |
| US5545764A | Process for the continuous production of high purity bisphenol A | Chemistry; Metallurgy | 11 | Expired |
| US5210328A | Process for the preparation of substituted cycloalkylidene bisphenols | Chemistry; Metallurgy | 11 | Expired |
| US5300700A | Process for the production of high-purity bisphenol A | Chemistry; Metallurgy | 10 | Expired |
| US6486363B1 | Process for the manufacture of bis(4-hydroxyaryl)alkanes | Chemistry; Metallurgy | 5 | Expired |
| US6689464B1 | Method and device for producing bisphenol a prills and bisphenol a prills produced according to this method | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6797784B1 | Thermoplastic resins with a low proportion of coarse particles | Chemistry; Metallurgy | 1 | Expired |
| US7153929B2 | Copolymers, devoid of rubber, with low residual monomer content and a method and device for producing the same | Performing Operations; Transporting | 0 | Expired |
| US7368061B2 | Process and device for the production of elastomer-modified thermoplastics | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7041781B2 | Thermoplastic molding compounds with improved surface properties and improved structural homogeneity | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.