Shivakumar Basalingappa Hendi
19Patents
7h-index
9Co-inventors
55Inventor score
Filing activity: Sep 14, 1992 → Mar 18, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5424429A | Preparation of pigmentary 2,9-dichloroquinacridone | Chemistry; Metallurgy | 18 | Expired |
| US5457203A | Pigmentary synthesis of quinacridone solid solutions | Chemistry; Metallurgy | 17 | Expired |
| US5618343A | Pigment compositions for coatings | Chemistry; Metallurgy | 13 | Expired |
| US5281269A | Aqueous process for preparation of modified beta quinacridone | Chemistry; Metallurgy | 10 | Expired |
| US6036766A | Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Chemistry; Metallurgy | 8 | Expired |
| US6348595B1 | Process for preparing | Chemistry; Metallurgy | 8 | Expired |
| US6057449A | Direct preparation of pyrrolo[3,4-c]pyrroles | Chemistry; Metallurgy | 7 | Expired |
| US5827364A | Pigment compositions | Chemistry; Metallurgy | 5 | Expired |
| US5786487A | 1,4-diketo-3,6-diarylpyrolo3,4-C!pyrrole pigment derivatives | Chemistry; Metallurgy | 5 | Expired |
| US5529623A | Pigmentary solid solutions of pyrrolo[3,4-c]pyrroles and quinacridones | Chemistry; Metallurgy | 5 | Expired |
| US5472496A | Solid solutions of pyrrolo-[3.4-c]-pyrroles with quinacridonequinones | Chemistry; Metallurgy | 5 | Expired |
| US5785750A | 1,4-diketo-3,6-diarylpyrolo3,4-c! pyrrole | Chemistry; Metallurgy | 4 | Expired |
| US5840907A | Process for preparing diketopyrrolopyrrole derivatives | Chemistry; Metallurgy | 4 | Expired |
| US6313300A | Oxidation process for preparing quinacridone pigments | Chemistry; Metallurgy | 3 | Expired |
| US6361594B1 | Direct preparation of pyrrolo[3,4-C]pyrroles | Chemistry; Metallurgy | 3 | Expired |
| US5919945A | Process for preparing diketopyrrolopyrrole derivatives | Chemistry; Metallurgy | 2 | Expired |
| US6248165A | Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles | Chemistry; Metallurgy | 2 | Expired |
| US6626990B2 | Use of aromatic compounds as phase directors and particle size reducers for quinacridone pigments | Chemistry; Metallurgy | 1 | Expired |
| US6441174B1 | Process for preparing bis(hydroxymethyl)perylenetetracarboximide | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.