Robert J. Knopf
26Patents
12h-index
14Co-inventors
74Inventor score
Filing activity: Jun 18, 1974 → Jun 12, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3939123A | Lightly cross-linked polyurethane hydrogels based on poly(alkylene ether) polyols | Emerging Cross-Sectional Technologies | 83 | Expired |
| US4340497A | (N-Substituted carbamoyloxy) alkanoyloxyalkyl acrylate esters | Chemistry; Metallurgy | 63 | Expired |
| US4209605A | Process for producing shaped polyurethane hydrogel articles | Emerging Cross-Sectional Technologies | 59 | Expired |
| US3939105A | Microporous polyurethane hydrogels, method and composites with natural and other synthetic fibers or films | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4528334A | Carboxylated poly(oxyalkylenes) | Chemistry; Metallurgy | 45 | Expired |
| US4182827A | Polyurethane hydrogels having enhanced wetting rates | Emerging Cross-Sectional Technologies | 39 | Expired |
| US3940542A | Polyurethane hydrogel fibers and tapes and composites with natural and other synthetic fibers or films | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4886917A | Alkoxylation using calcium catalysts and products therefrom | Performing Operations; Transporting | 27 | Expired |
| US4754075A | Alkoxylation using calcium catalysts and products therefrom | Performing Operations; Transporting | 27 | Expired |
| US4481367A | High viscosity polyoxyalkylene glycol block copolymers and method of making the same | Chemistry; Metallurgy | 23 | Expired |
| US4195167A | Gradient polymers of two or more cyclic, organic, ring-opening, addition polymerizable monomers and methods for making same | Chemistry; Metallurgy | 22 | Expired |
| US4820673A | Alkoxylation using calcium catalysts and products therefrom | Performing Operations; Transporting | 13 | Expired |
| US4927954A | Continuous process for producing secondary alcohols and carboxylic acid esters | Chemistry; Metallurgy | 12 | Expired |
| US4171423A | Derivatives of ester diol alkoxylates and compositions thereof | Chemistry; Metallurgy | 8 | Expired |
| US4163114A | Ester diol alkoxylates | Chemistry; Metallurgy | 8 | Expired |
| US4281172A | Acrylyl esters of polyester-polyether copolymers | Chemistry; Metallurgy | 7 | Expired |
| US4188477A | Isocyanate derivatives of ester diol alkoxylates and compositions thereof | Chemistry; Metallurgy | 7 | Expired |
| US4158652A | High solids compositions containing ester diol alkoxylates | Chemistry; Metallurgy | 7 | Expired |
| US4243569A | High solids compositions containing ester diol alkoxylate and aqueous acrylic latex | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5104575A | Alkoxylation using heterogeneous calcium catalysts and products therefrom | Performing Operations; Transporting | 3 | Expired |
| US4902658A | Alkoxylation using heterogeneous calcium catalysts and products therefrom | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4192789A | Blends of acrylic latexes and derivatives of ester diol alkoxylates | Chemistry; Metallurgy | 2 | Expired |
| US4223119A | High solids compositions containing ester diol alkoxylate and organic polyisocyanate | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4195160A | Epoxide derivatives of ester diol alkoxylates and compositions thereof | Chemistry; Metallurgy | 1 | Expired |
| US4163113A | Ester diol alkoxylate acrylates | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.