Otto Gottel
10Patents
3h-index
9Co-inventors
53Inventor score
Filing activity: Mar 2, 1977 → Mar 27, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4285497A | Electromagnetically actuated valve | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4195662A | Electromagnetic valve with electric signal generator | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4937349A | Process for the preparation of 3-[2'H-benzotriazol-(2')-yl]-4-hydroxy-benzenesulfonic acids and the salts thereof | Chemistry; Metallurgy | 6 | Expired |
| US10039701B2 | Permanent hair colorants based on a cream-like carrier and a combination of tris(hydroxymethyl) aminomethane, at least an amino acid and an oxidative dye | Human Necessities | 1 | Active |
| US8759589B2 | Methods of synthesizing 2-Methoxymethyl-1,4-benzenediamine | Chemistry; Metallurgy | 0 | Active |
| US7405325B2 | Process for the preparation of 4-hydroxalkylamino-2-nitro-anisoles | Chemistry; Metallurgy | 0 | Active |
| US11298304B2 | Two component hair treatment kit comprising a hair coloring cream and a developer composition comprising a specific tensioactive compound | Human Necessities | 0 | Active |
| US7393366B2 | Agents for coloring keratin fibers | Textiles; Paper | 0 | Active |
| US5702866A | Dihydrazides | Physics | 0 | Expired |
| US5686222A | Dihydrazides | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.