Friedbert Wechs
19Patents
12h-index
21Co-inventors
78Inventor score
Filing activity: Mar 1, 1979 → May 28, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4968733A | Process for producing microporous powders and membranes | Emerging Cross-Sectional Technologies | 179 | Expired |
| US5837234A | Bioartificial organ containing cells encapsulated in a permselective polyether suflfone membrane | Human Necessities | 140 | Expired |
| US4976859A | Integral asymmetric polyether-sulfone membrane, process for its production, and use for ultrafiltration and microfiltration | Chemistry; Metallurgy | 98 | Expired |
| US4239720A | Fiber structures of split multicomponent fibers and process therefor | Emerging Cross-Sectional Technologies | 79 | Expired |
| US4342801A | Suede-like sheet material | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4369156A | Process for the preparation of fibrillated fiber structures | Textiles; Paper | 32 | Expired |
| US5919370A | Integral, multi-asymmetric, semi-permeable membrane | Performing Operations; Transporting | 25 | Expired |
| US6497752B1 | Integrally asymmetrical polyolefin membrane | Performing Operations; Transporting | 23 | Expired |
| US4594207A | Method for the production of porous bodies with adjustable total pore volume, adjustable pore size and adjustable pore walls | Chemistry; Metallurgy | 23 | Expired |
| US6375876B1 | Method for producing an integrally asymmetrical polyolefin membrane | Performing Operations; Transporting | 17 | Expired |
| US4361609A | Fiber structures of split multicomponent fibers and process therefor | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7811507B2 | Dialysis membrane having improved ability for removal of middle molecules | Emerging Cross-Sectional Technologies | 14 | Active |
| US8727136B2 | Microfiltration membrane with improved filtration properties | Performing Operations; Transporting | 8 | Active |
| US8302781B2 | High-flux dialysis membrane with an improved separation behaviour | Performing Operations; Transporting | 8 | Active |
| US7201860B2 | Polyamide membrane with improved hydrolytic stability and method for production thereof | Performing Operations; Transporting | 8 | Expired |
| US4612688A | Process for making suede-like sheet material | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7429343B2 | Process for producing polyolefin membrane with integrally asymmetrical structure | Performing Operations; Transporting | 5 | Expired |
| US6632361B2 | Shaped objects for pyrogen retention and processes for their manufacture | Chemistry; Metallurgy | 4 | Expired |
| US8651284B2 | Dialysis membrane with improved removal of middle molecules | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.