Hidehei Kageyama
106Patents
12h-index
33Co-inventors
86Inventor score
Filing activity: Jun 9, 1977 → Apr 26, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4200977A | Cutter knife | Performing Operations; Transporting | 31 | Expired |
| US6227739A | Liquid container | Performing Operations; Transporting | 31 | Expired |
| US7051642B2 | Liquid container | Human Necessities | 24 | Expired |
| US5988908A | Barrel with finger gripping means | Performing Operations; Transporting | 21 | Expired |
| US5997200A | Barrel with finger gripping means | Performing Operations; Transporting | 20 | Expired |
| US4618280A | Push-button writing instrument with front seal means | Performing Operations; Transporting | 19 | Expired |
| US4365390A | Clip for writing utensil | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6176632A | Liquid container | Human Necessities | 16 | Expired |
| US5971644A | Side knock-type writing instrument | Performing Operations; Transporting | 15 | Expired |
| US6749354B2 | Composite writing implement | Performing Operations; Transporting | 14 | Expired |
| US4386865A | Automatic sharp pencil | Performing Operations; Transporting | 13 | Expired |
| US6102602A | Liquid container cap | Human Necessities | 13 | Expired |
| US5009533A | Propelling pencil with cushion sleeve | Performing Operations; Transporting | 12 | Expired |
| US6702158B2 | Knocking-type liquid container | Human Necessities | 12 | Expired |
| US4714365A | Mechanical pencil | Performing Operations; Transporting | 12 | Expired |
| US4955739A | Mechanical pencil having side push button actuated lead advance | Performing Operations; Transporting | 11 | Expired |
| US4619539A | Mechanical pencil equipped with lead-storing cartridge | Performing Operations; Transporting | 10 | Expired |
| US6039484A | Writing instrument | Performing Operations; Transporting | 10 | Expired |
| US7018124B1 | Writing implement with stylus | Performing Operations; Transporting | 10 | Expired |
| US5022772A | Rotary knock type mechanical pencil | Performing Operations; Transporting | 9 | Expired |
| US4171170A | Automatic pencil | Performing Operations; Transporting | 9 | Expired |
| US6325130A | Coat transfer tool | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6155734A | Rotary stick projecting device | Human Necessities | 9 | Expired |
| US4371277A | Automatic pencil | Performing Operations; Transporting | 9 | Expired |
| US5056947A | Dual refill-type writing utensil | Performing Operations; Transporting | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.