Peter Rohringer
45Patents
9h-index
45Co-inventors
75Inventor score
Filing activity: Apr 2, 1975 → Jun 11, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4956049A | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Chemistry; Metallurgy | 86 | Expired |
| US4382884A | Fire-retardant, intumescent composition and its use for the flameproofing of substrates, and as a fire-extinguishing agent comprising an ammonium salt, a water-soluble nitrogen compound as a blowing agent and dextrin | Chemistry; Metallurgy | 62 | Expired |
| US6723846B1 | Triazinylaminostilbene derivative as fluorescent whitening agents | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5830241A | Fluorescent whitening agent formulation | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5201998A | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Textiles; Paper | 17 | Expired |
| US5622749A | Fluorescent whitening of paper | Textiles; Paper | 14 | Expired |
| US6464832B2 | Method for optically brightening paper | Textiles; Paper | 11 | Expired |
| US4219605A | Process for flameproofing synthetic fibre material and product | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4301217A | Method of flameproofing wood with inorganic ammonium salts and dicyandiamide/formaldehyde reaction products | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4116702A | Agent for flame proofing synthetic fibrous material | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4135028A | Process for fireproofing synthetic fiber materials with sulphonamides | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5976410A | Dispersions of fluorescent whitening agents | Textiles; Paper | 7 | Expired |
| US4288489A | Process for flameproofing organic fibrous material with phosphonic acid salts | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5064570A | Dispersion fluorescent brightener preparations | Textiles; Paper | 7 | Expired |
| US6210449A | Fluorescent whitening agents | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6302999A | Method for optically brightening paper | Textiles; Paper | 6 | Expired |
| US5254522A | Pressure-sensitive or heat-sensitive recording material | Performing Operations; Transporting | 4 | Expired |
| US4623428A | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Chemistry; Metallurgy | 4 | Expired |
| US7270771B2 | Triazinylaminostilbene disulphonic acid mixtures | Textiles; Paper | 4 | Expired |
| US4094929A | Process for manufacture of amidophosphates | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6620294B1 | Formulations of fluorescent whitening agents | Chemistry; Metallurgy | 4 | Expired |
| US4128687A | Process for fireproofing polyester fiber materials with substituted sulphurylamides | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4627889A | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Chemistry; Metallurgy | 3 | Expired |
| US4178398A | Amidophosphate reaction products used as flameproofing agents | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4737239A | Process for the manufacture of paper or cardboard which is sized under alkaline or neutral conditions with anionic hydrophobic sizing agents and cationic retention aids | Textiles; Paper | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.