Jörg Hofmann
90Patents
14h-index
76Co-inventors
87Inventor score
Filing activity: Dec 21, 1984 → Sep 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7008900B1 | Double metal cyanide catalysts for producing polyether polyols | Chemistry; Metallurgy | 77 | Expired |
| US6780813B1 | Process for producing DMC catalysts | Chemistry; Metallurgy | 52 | Expired |
| US6835687B2 | Method for producing double metal cyanide (DMC) catalysts | Performing Operations; Transporting | 37 | Expired |
| US6381795B1 | Brush part for electrical toothbrush | Performing Operations; Transporting | 33 | Expired |
| US6646100B2 | Aliphatic polycarbonate homo-and co-polymers produced by DMC catalysis and the process for their production | Chemistry; Metallurgy | 25 | Expired |
| US6323375A | Crystalline double metal cyanide catalysts for producing polyether polyols | Performing Operations; Transporting | 21 | Expired |
| US5938945A | Method of welding weld studs to a workpiece | Performing Operations; Transporting | 20 | Expired |
| US6204357A | Double metal cyanide catalysts for preparing poly-etherpolyols | Chemistry; Metallurgy | 19 | Expired |
| US6291388A | Double metal cyanide catalysts for producing polyether polyols | Chemistry; Metallurgy | 18 | Expired |
| US8933192B2 | Process for the activation of double metal cyanide catalysts for the preparation of polyether carbonate polyols | Emerging Cross-Sectional Technologies | 17 | Active |
| US6486361B1 | Method for preparing polyether polyols | Chemistry; Metallurgy | 16 | Expired |
| US9249259B2 | Method for activating double metal cyanide catalysts for producing polyether polyols | Chemistry; Metallurgy | 15 | Active |
| US8946466B2 | Method for producing polyether carbonate polyols | Chemistry; Metallurgy | 14 | Active |
| US6482993B1 | Method for producing long chain polyether polyols without reprocessing | Performing Operations; Transporting | 14 | Expired |
| US6391820B1 | Bi-metallic-cyanide catalysts used for preparing polyether polyols | Performing Operations; Transporting | 14 | Expired |
| US6919293B1 | Double metal cyanide catalysts for producing polyether polyols | Performing Operations; Transporting | 13 | Expired |
| US6624321B2 | Process for the preparation of polyether polyols | Performing Operations; Transporting | 12 | Expired |
| US6858655B1 | High-resilient polyurethane foams produced from polyether polyols | Chemistry; Metallurgy | 12 | Expired |
| US5998327A | Zinc/metal hexacyanocobaltate complex compounds, a process for their preparation, and their use in a process for the production of polyether polyols | Chemistry; Metallurgy | 12 | Expired |
| US4707130A | Method and apparatus for the optical measurement of fluid flow | Physics | 12 | Expired |
| US8361678B2 | Special polyether-based polyurethane formulations for the production of holographic media | Physics | 11 | Active |
| US6492565B2 | Process for the preparation of polyether polyols | Performing Operations; Transporting | 10 | Expired |
| US6586566B1 | Double metal cyanide catalysts for producing polyether polyols | Chemistry; Metallurgy | 10 | Expired |
| US9120894B2 | Method for producing polyether polyols | Chemistry; Metallurgy | 9 | Active |
| US9315622B2 | Process for the production of polyether carbonate polyols | Chemistry; Metallurgy | 9 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.