Tadayoshi Ebinuma
11Patents
5h-index
10Co-inventors
59Inventor score
Filing activity: Feb 23, 1988 → Dec 27, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5547301A | Writing instrument with rotatable advancement and retraction | Performing Operations; Transporting | 21 | Expired |
| US4856693A | Working out container of bar shaped article | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7008131B2 | Composite holding device | Performing Operations; Transporting | 13 | Expired |
| US5056947A | Dual refill-type writing utensil | Performing Operations; Transporting | 9 | Expired |
| US5535487A | Clip attachment apparatus for a writing instrument | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5810496A | Writing instrument | Performing Operations; Transporting | 5 | Expired |
| US5165813A | Container with snap-in chuck and chuck ring | Performing Operations; Transporting | 4 | Expired |
| US6039485A | Double-chuck mechanical pencil | Performing Operations; Transporting | 4 | Expired |
| US5961237A | Writing instrument | Performing Operations; Transporting | 3 | Expired |
| US6379067B2 | Double-chuck mechanical pencil | Performing Operations; Transporting | 2 | Expired |
| US4969763A | Lead forwarding mechanism retainer for thurst action mechanical pencil | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.