Friedhelm Bartnik
6Patents
6h-index
9Co-inventors
48Inventor score
Filing activity: Nov 10, 1981 → Jun 19, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5399353A | Preparations for covering undamaged and/or damaged areas of human or animal skin | Human Necessities | 28 | Expired |
| US4518697A | Acid stable protease from mutants of genus Aspergillus | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4545984A | Arene-carboxylic acid derivatives as antiseborrheic additives for cosmetic agents | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4439418A | Topical preparations for the treatment of seborrhea and process for inhibiting sebum production | Human Necessities | 15 | Expired |
| US4493823A | Topical cosmetic preparations for the treatment of oily hair and seborrheic skin | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4473644A | Acid stable protease from mutants of genus Rhizopus | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.