Friedrich Ruf
11Patents
5h-index
28Co-inventors
66Inventor score
Filing activity: May 23, 1990 → Mar 14, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5423911A | Coating pigment for cellulose - based printing media | Chemistry; Metallurgy | 16 | Expired |
| US8637300B2 | Magnetic glass particles for use in biogas plants, fermentation and separation processes | Emerging Cross-Sectional Technologies | 14 | Active |
| US6277490A | Color developer pigment for carbonless copying paper | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5401568A | Coated fillers having silicic acid for heat-sensitive recording materials | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5039377A | Bleaching paper pulp with modified silicate ion exchanger and hydrogen peroxide | Textiles; Paper | 9 | Expired |
| US5637552A | Process for producing neutral to alkali color developer pigments | Chemistry; Metallurgy | 1 | Expired |
| US9238785B2 | Method for biodiesel and biodiesel precursor production | Emerging Cross-Sectional Technologies | 1 | Active |
| US8394975B2 | Amorphous adsorbent, method of obtaining the same and its use in the bleaching of fats and/or oils | Emerging Cross-Sectional Technologies | 0 | Active |
| US8778190B2 | Method for processing waste water loaded with nitrogen-containing compounds | Chemistry; Metallurgy | 0 | Active |
| US11524272B2 | Adsorbent and packaging material | Performing Operations; Transporting | 0 | Active |
| US8987487B2 | Method for removing phosphorus-containing compounds from triglyceride-containing compositions | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.