Karl M. E. Hellsten
18Patents
11h-index
13Co-inventors
65Inventor score
Filing activity: Nov 28, 1973 → Nov 25, 1987
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4476323A | Surface-active quaternary ammonium compounds for treatment of textiles and cellulosic materials | Textiles; Paper | 52 | Expired |
| US4358368A | Process for the froth flotation of calcium phosphate-containing minerals and flotation agents therefor | Performing Operations; Transporting | 42 | Expired |
| US3972855A | Quaternary ammonium compounds and treatment of plastic and other materials therewith | Chemistry; Metallurgy | 40 | Expired |
| US4058489A | Detergent composition having textile softening and antistatic effect | Chemistry; Metallurgy | 34 | Expired |
| US4384965A | Method for the mechanical working of metals and lubricant concentrate | Chemistry; Metallurgy | 22 | Expired |
| US4315755A | Hydrocarbon oils containing 1 to 10 percent emulsified water and emulsifiers therefor | Chemistry; Metallurgy | 20 | Expired |
| US4018696A | Liquid detergent composition | Chemistry; Metallurgy | 17 | Expired |
| US4659332A | Process for dry-cleaning textiles and microemulsion dry cleaning composition for the use therein | Textiles; Paper | 15 | Expired |
| US4104175A | Aqueous solutions of quaternary ammonium compounds | Emerging Cross-Sectional Technologies | 13 | Expired |
| US3954845A | Synthetic detergents of the ampholytic betaine type, process for preparing the same and compositions | Chemistry; Metallurgy | 12 | Expired |
| US4545898A | Process for froth flotation | Performing Operations; Transporting | 11 | Expired |
| US3932495A | Process for preparing quaternary ammonium compounds | Textiles; Paper | 10 | Expired |
| US4496367A | Pumpable aqueous slurry of a solid fuel and a process for the production thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4254823A | Process for separating mineral wool fibers from nonfibrous materials | Chemistry; Metallurgy | 4 | Expired |
| US4430238A | Esterified dicarboxylic acid and its use | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4565549A | Aqueous slurry of a solid fuel and a process for the production thereof | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4549881A | Aqueous slurry of a solid fuel and a process and means for the production thereof | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4887383A | Process for producing a slurry of a pulverized carbonaceous material | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.