Christian Luthi
15Patents
4h-index
12Co-inventors
57Inventor score
Filing activity: Aug 16, 1974 → Sep 15, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4003875A | Asymmetrical oxalic acid diaryl amide stabilizers | Chemistry; Metallurgy | 11 | Expired |
| US4263431A | Cationic fluorescent whitening agents | Textiles; Paper | 11 | Expired |
| USD953144S1 | Lockas | General | 7 | Active |
| US4013713A | Diarylvinyl-dihydrophenanthrene compounds | Textiles; Paper | 5 | Expired |
| US9162850B2 | Elevator shaft closure door frame with control arrangement | Performing Operations; Transporting | 4 | Active |
| US4339393A | Distyrylbiphenyls | Chemistry; Metallurgy | 4 | Expired |
| US4105399A | Optically brightening with a synergistic mixture | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7422089B2 | Drive unit for an elevator | Electricity | 2 | Expired |
| US4008166A | Optically brightening with a synergistic mixture | Textiles; Paper | 2 | Expired |
| US11866958B2 | Locking device | Fixed Constructions | 1 | Active |
| US4602087A | Distyrylbiphenyls | Chemistry; Metallurgy | 1 | Expired |
| US4222739A | Certain bis(phenyl)-benzodifurans | Chemistry; Metallurgy | 1 | Expired |
| US4468352A | Distyrylbiphenyls | Chemistry; Metallurgy | 1 | Expired |
| US4151163A | Quaternized 1-(pyrazolinylphenylsulphonyl)-piperazines | Physics | 0 | Expired |
| US12203289B2 | Locking device | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.