Takeshi Ikegami
81Patents
13h-index
47Co-inventors
84Inventor score
Filing activity: Oct 3, 1979 → Apr 8, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7193246B1 | Nitride semiconductor device | Electricity | 123 | Expired |
| US7402838B2 | Nitride semiconductor device | Electricity | 71 | Active |
| US7947994B2 | Nitride semiconductor device | Electricity | 39 | Active |
| US7380519B2 | Pet litter box | Human Necessities | 31 | Active |
| US4572652A | Copying machine with audible indicator means | Physics | 19 | Expired |
| US8020523B2 | Absorbent article for animal | Human Necessities | 18 | Active |
| US7856945B2 | Animal litter box | Human Necessities | 16 | Active |
| US6405678B2 | Granular absorbent article for pet animals | Performing Operations; Transporting | 16 | Expired |
| US6460484B2 | Pet sheet | Human Necessities | 16 | Expired |
| US7678221B2 | Pet waste absorption sheet and process for manufacturing the same | Emerging Cross-Sectional Technologies | 16 | Active |
| US7131396B2 | Animal toilet | Human Necessities | 14 | Expired |
| US7195618B2 | Diaper for male pet | Human Necessities | 14 | Expired |
| US9265234B2 | Absorbent article for pet | Mechanical Engineering; Lighting; Heating | 13 | Active |
| US6994054B2 | Animal litter box | Human Necessities | 13 | Expired |
| US4276978A | Sheet conveyor for use in copying machines | Performing Operations; Transporting | 13 | Expired |
| US8453604B2 | Animal litter | Human Necessities | 12 | Active |
| US9332731B2 | Pet diaper | Human Necessities | 11 | Active |
| US8042490B2 | Animal waste collection sheet | Human Necessities | 10 | Active |
| US7467600B2 | Animal litter | Human Necessities | 9 | Expired |
| US8468973B2 | Excretion disposal sheet for pet animals | Human Necessities | 9 | Active |
| US7793616B2 | Animal litter for animals | Human Necessities | 8 | Active |
| US7849818B2 | Animal litter box | Human Necessities | 8 | Active |
| US8101815B2 | Pet waste absorption sheet | Human Necessities | 8 | Active |
| US8388589B2 | Pet sheet | Human Necessities | 7 | Active |
| US7387085B2 | Animal litter | Human Necessities | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.