Masahide Ogawa
33Patents
12h-index
43Co-inventors
77Inventor score
Filing activity: Nov 12, 1976 → May 19, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5236683A | Amorphous silica spherical particles | Chemistry; Metallurgy | 39 | Expired |
| US5139760A | Amorphous silica-alumina spherical particles and process for preparation thereof | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5236680A | Preparation of amorphous silica-alumina particles by acid-treating spherical P-type zeolite particles crystallized from a sodium aluminosilicate gel | Chemistry; Metallurgy | 38 | Expired |
| US5453260A | Amorphous silica or silica-alumina spherical particles and process for preparation thereof | Chemistry; Metallurgy | 37 | Expired |
| US5013603A | Ink jet recording paper with amorphous silica filler | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5266397A | Amorphous silica-type filler | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4420419A | Abrasion-resistant granular zeolite and process for preparation thereof | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4915923A | Filler for ink jet recording paper | Chemistry; Metallurgy | 16 | Expired |
| US4102977A | Process for the preparation of alkali aluminosilicate detergent builder | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4892591A | Filler for ink jet recording paper | Chemistry; Metallurgy | 13 | Expired |
| US4770894A | Decolorized oyster extract concentrate | Human Necessities | 12 | Expired |
| US4963519A | Composite adsorbent | Performing Operations; Transporting | 12 | Expired |
| US5419883A | Lithium aluminum complex hydroxide salt and process for preparation thereof | Chemistry; Metallurgy | 11 | Expired |
| US5143708A | Tetracosahedral siliceous particles and process for preparation thereof | Chemistry; Metallurgy | 11 | Expired |
| US4544604A | Heat-sensitive recording paper and filler therefor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4405371A | Novel clay mineral color developer for pressure sensitive recording paper and process for producing same | Performing Operations; Transporting | 10 | Expired |
| US5049365A | Process for treating air containing hydrocarbon vapor with a composite adsorbent material | Performing Operations; Transporting | 10 | Expired |
| US5298234A | Alumina-silica resin additive | Chemistry; Metallurgy | 9 | Expired |
| US5133899A | Stabilizer composition for chlorine-containing polymers and process for preparation thereof | Chemistry; Metallurgy | 9 | Expired |
| US5356567A | Lithium aluminum complex hydroxide salt stabilizer for resins | Chemistry; Metallurgy | 8 | Expired |
| US5360859A | Lithium aluminum complex hydroxide salt stabilizer for resins | Chemistry; Metallurgy | 7 | Expired |
| US4238346A | Detergent builders and process for preparation thereof | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5418043A | Amorphous silica filler | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4968523A | Process for preparation of shellfish extract concentrate, and shellfish extract concentrate | Human Necessities | 6 | Expired |
| US5004716A | Synthetic stevensite and process for preparation thereof | Chemistry; Metallurgy | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.