Ehrfried Parr
8Patents
6h-index
4Co-inventors
48Inventor score
Filing activity: Oct 27, 1977 → May 28, 1985
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4303629A | Crystalline zeolite powder of type A (I) | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4303627A | Crystalline zeolite powder of type A (VI) | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4303628A | Crystalline zeolite powder of type A (IV) | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4305916A | Crystalline zeolite powder of type A (III) | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4303626A | Crystalline zeolite powder of type A (V) | Chemistry; Metallurgy | 12 | Expired |
| US4542115A | Zeolite granulate, process for its production | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4551322A | Process for preparing zeolite powder of type A (IV) | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4620399A | Zeolite granulate, process for its production and use | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.