Hermann Stein
25Patents
9h-index
37Co-inventors
75Inventor score
Filing activity: Aug 31, 1977 → Jan 31, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5364563A | Powdered aqueous carotenoid dispersions | Chemistry; Metallurgy | 43 | Expired |
| US5317258A | Device for evaluating periodic signals from inductive pick-ups having a pulse former stage influenced as a function of the pick-up signal amplitude | Electricity | 20 | Expired |
| US4295509A | Emergency track ring for pneumatic vehicle tires | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6406735B2 | Process for preparing a finely divided pulverous carotenoid retinoid or natural colourant preparation | Human Necessities | 18 | Expired |
| US4806427A | Process for the production of catalysts for the reduction of nitrogen oxides from exhaust gases and similar chemical air cleaning processes | Performing Operations; Transporting | 13 | Expired |
| US4684626A | Moenomycin a derivatives and their use as antibiotics | Chemistry; Metallurgy | 12 | Expired |
| US4592403A | Emergency operation ring for tubeless tires in motor vehicles | Performing Operations; Transporting | 12 | Expired |
| US4677731A | Process and device for mounting porous ceramic material | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6536940B1 | Preparation of liquid dispersions | Chemistry; Metallurgy | 10 | Expired |
| US4758410A | Cartridge for catalyst plates | Performing Operations; Transporting | 9 | Expired |
| US4137522A | Remote control apparatus for a plurality of controllable objects | Physics | 9 | Expired |
| US6722780B2 | Preparation of liquid dispersions | Chemistry; Metallurgy | 9 | Expired |
| US6530684B1 | Preparation of liquid dispersions | Chemistry; Metallurgy | 8 | Expired |
| US4656148A | Method for the reactivation of a catalyst used for removal of nitrogen oxides | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4828806A | Process for cleaning an exhaust gas | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4371024A | Emergency running ring for pneumatic vehicle tires | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4720376A | Process for the removal of nitrogen oxides and soot from exhaust gases of machines and combustion installations burning heavy fuel oil | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4196416A | Synchronization apparatus with variable window width and spacing at the receiver | Physics | 6 | Expired |
| US4721699A | Catalyst for the separation of nitrogen oxides from combustion exhaust gases | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4564485A | Process for producing a plastic composition which can be processed into a fire-resistant material | Chemistry; Metallurgy | 5 | Expired |
| US4695559A | Catalyst for the selective reduction of nitrogen oxides in waste gases and process for the manufacture of such a catalyst | Performing Operations; Transporting | 5 | Expired |
| US5441407A | Roller for roller-hearth furnaces | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5143684A | Insulated roller assembly for a roller furnace | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4436680A | Process for producing granular, fire-resistant material | Chemistry; Metallurgy | 4 | Expired |
| US4672052A | Catalyst for removal of nitrogen oxides from exhaust gases | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.