Wolfgang Lotsch
26Patents
5h-index
11Co-inventors
62Inventor score
Filing activity: Apr 28, 1975 → Sep 15, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4166179A | Manufacture of organic pigments | Chemistry; Metallurgy | 14 | Expired |
| US4316023A | Isoindoline colorants | Chemistry; Metallurgy | 9 | Expired |
| US4271301A | Preparation of pigmentary form isoindoline | Chemistry; Metallurgy | 6 | Expired |
| US4719300A | Isoindoline colorants | Chemistry; Metallurgy | 5 | Expired |
| US4016151A | Phenyl-substituted phthalazone azo dyes with a coupling component of the phenol, napthol, acetoacetarylide, pyrazolone, quinolone, pyridine, pyrimidone or isoquinolone series | Chemistry; Metallurgy | 5 | Expired |
| US4401815A | Isoindoline colorants | Chemistry; Metallurgy | 4 | Expired |
| US4525591A | 2,4-Dioxotetrahydropyrimido-(1,2-a)-benzimidazole substituted isoindoline dyes and their use | Chemistry; Metallurgy | 4 | Expired |
| US4758663A | Isoindoline compound | Chemistry; Metallurgy | 4 | Expired |
| US4599113A | Isoindoline pigment having a high color strength | Chemistry; Metallurgy | 4 | Expired |
| US4480097A | Isoindoline colorants | Chemistry; Metallurgy | 4 | Expired |
| US4398027A | Preparation of pigmentary form isoindoline | Chemistry; Metallurgy | 3 | Expired |
| US4645539A | Transparent isoindoline pigment having a high color strength | Chemistry; Metallurgy | 3 | Expired |
| US4371735A | Preparation of pigments having improved technological properties | Chemistry; Metallurgy | 3 | Expired |
| US4845214A | Process for conditioning isoindoline pigments | Chemistry; Metallurgy | 3 | Expired |
| US4352932A | Isoindoline colorants | Chemistry; Metallurgy | 2 | Expired |
| US4707548A | Bisisoindoline pigments | Chemistry; Metallurgy | 2 | Expired |
| US4725685A | Novel isoindoline compounds, their metal complexes and their use as pigments | Chemistry; Metallurgy | 2 | Expired |
| US4785114A | Quinophthalone dyes | Chemistry; Metallurgy | 2 | Expired |
| US4356123A | Sparingly soluble isoinodoline colorants | Chemistry; Metallurgy | 2 | Expired |
| US4746740A | Isoindoline colorants | Chemistry; Metallurgy | 1 | Expired |
| US4340735A | Isoindoline colorants | Chemistry; Metallurgy | 1 | Expired |
| US4311527A | Isoindoline colorants | Chemistry; Metallurgy | 1 | Expired |
| US4723023A | Isoindoline dyes | Chemistry; Metallurgy | 1 | Expired |
| USRE31986E | Manufacture of organic pigments | General | 0 | Expired |
| US4412949A | Pigments comprising cyanomethylquinazolones coupled to diazo compounds prepared from 1-aminoanthroquinones | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.