Marcel Siegler
9Patents
5h-index
9Co-inventors
52Inventor score
Filing activity: Sep 9, 1976 → Jun 10, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4295894A | Method of preparing soluble collagen fibers | Textiles; Paper | 16 | Expired |
| US4285986A | Oligopeptides derived from collagen | Human Necessities | 10 | Expired |
| US4494994A | Surface active agent compositions containing polypeptides and lignin sulfonic acid | Chemistry; Metallurgy | 9 | Expired |
| US4060384A | Manufacture of leather | Chemistry; Metallurgy | 7 | Expired |
| US4285689A | Leather tanning composition and method | Chemistry; Metallurgy | 5 | Expired |
| US4784664A | Non-chrome tanning method | Chemistry; Metallurgy | 2 | Expired |
| US4740211A | Chromium-free tanning process | Chemistry; Metallurgy | 2 | Expired |
| US5340737A | Process of preparing pepsin for bating hides | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4557855A | Surface active agent compositions | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.