Holger Seifert
17Patents
6h-index
23Co-inventors
66Inventor score
Filing activity: Feb 27, 1995 → Mar 15, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6284812A | Thermally stable rigid foams based on isocyanate and having low brittleness and low thermal conductivity | Chemistry; Metallurgy | 19 | Expired |
| US6495652B1 | Prepolymers containing isocyanate groups and a method for the production thereof | Chemistry; Metallurgy | 16 | Expired |
| US5624969A | Production of rigid foams based on isocyanate | Chemistry; Metallurgy | 13 | Expired |
| US5684092A | Production of rigid foams based on isocyanate | Chemistry; Metallurgy | 10 | Expired |
| US5895792A | Production of rigid polyurethane foams | Chemistry; Metallurgy | 9 | Expired |
| US6100308A | Preparation of polyurethanes having improved curing | Chemistry; Metallurgy | 8 | Expired |
| US10535940B2 | Plug-in connector with a heat capacity element arranged on a contact element | Emerging Cross-Sectional Technologies | 6 | Active |
| US7893124B2 | Method for producing rigid polyurethane foams | Chemistry; Metallurgy | 6 | Expired |
| US8293807B2 | Method for the production of rigid polyurethane foam | Chemistry; Metallurgy | 6 | Active |
| US5670554A | Production of CFC-free polyurethane rigid foams having a reduced thermal conductivity and their use | Chemistry; Metallurgy | 3 | Expired |
| US5492941A | Polyurethane-based, compact moldings or moldings having a cellular core and a compacted surface, process for their production, and their use as shoe or shoe sole material | Chemistry; Metallurgy | 3 | Expired |
| US5750586A | Production of CFC-free polyurethane rigid foams having a reduced thermal conductivity and their use | Chemistry; Metallurgy | 2 | Expired |
| US5530154A | Prepolymers containing isocyanate groups | Chemistry; Metallurgy | 2 | Expired |
| US5488070A | Polyurethane-based, compact moldings or moldings having a cellular core and a compacted surface, process for their production, and their use as shoe or shoe sole material | Chemistry; Metallurgy | 2 | Expired |
| US5556891A | Prepolymers containing isocyanate groups | Chemistry; Metallurgy | 1 | Expired |
| US6040349A | Production of rigid polyurethanes foams with reduced density | Chemistry; Metallurgy | 0 | Expired |
| US9657133B2 | Rigid polyurethane foams | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.