Tomohiro Ukai
37Patents
9h-index
43Co-inventors
75Inventor score
Filing activity: Jul 25, 1997 → Oct 17, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5904079A | Screw feeding device in continuous screw driving tool | Performing Operations; Transporting | 55 | Expired |
| US5988025A | Screw feeding device in continuous screw driving tool | Performing Operations; Transporting | 51 | Expired |
| US6321622A | Structure for attaching a suspending device to an electric power tool | Performing Operations; Transporting | 43 | Expired |
| US5947210A | Power screwdriver | Performing Operations; Transporting | 29 | Expired |
| US8308034B2 | Hook structure of power tool | Performing Operations; Transporting | 26 | Active |
| USD588429S1 | Portable electric driver | General | 11 | Expired |
| US9259832B2 | Handheld electrical power tools | Performing Operations; Transporting | 11 | Active |
| USD639130S1 | Portable electric saw | General | 10 | Expired |
| USD551046S1 | Portable power saw | General | 9 | Expired |
| US10259060B2 | Reciprocating tool | Emerging Cross-Sectional Technologies | 6 | Active |
| USD545657S1 | Portable power saw | General | 6 | Expired |
| US8944179B2 | Power tool | Performing Operations; Transporting | 5 | Active |
| US9764399B2 | Cutting tool | Performing Operations; Transporting | 5 | Active |
| US9440344B2 | Dust collecting device and impact tool | Emerging Cross-Sectional Technologies | 4 | Active |
| US10511208B2 | Reciprocating tool | Electricity | 2 | Active |
| USD845730S1 | Portable electric saw | General | 2 | Active |
| US9302363B2 | Dust collecting device and impact tool | Emerging Cross-Sectional Technologies | 2 | Active |
| US10027201B2 | Reciprocating tool | Electricity | 2 | Active |
| US11554430B2 | Reciprocating tool | Performing Operations; Transporting | 2 | Active |
| US7741895B2 | Semiconductor switch circuit having MOS transistors with low current consumption | Electricity | 2 | Active |
| US8944180B2 | Power tool with a torque transmitting mechanism | Performing Operations; Transporting | 1 | Active |
| US11396055B2 | Reciprocating tool | Emerging Cross-Sectional Technologies | 1 | Active |
| US8672551B2 | Sliding bearing for internal combustion engines | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10286464B2 | Cutting tool | Performing Operations; Transporting | 0 | Active |
| US12226841B2 | Reciprocating cutting tool | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.