Kunio Arai
41Patents
16h-index
39Co-inventors
81Inventor score
Filing activity: Oct 9, 1987 → Dec 27, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6521866B1 | Laser beam machining and laser beam machine | Electricity | 42 | Expired |
| US6849824B2 | Multibeam laser drilling apparatus | Performing Operations; Transporting | 42 | Expired |
| US5635154A | Process for producing fine metal oxide particles | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4915550A | Pressure foot of printed circuit board drilling apparatus | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5315072A | Printed wiring board having blind holes | Electricity | 29 | Expired |
| US5010232A | Method of and apparatus for perforating printed circuit board | Electricity | 29 | Expired |
| US6092538A | Method for using high density compressed liquefied gases in cleaning applications | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5888036A | Drill bit and step feeding method | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6043453A | Apparatus for laser processing with a mechanical cutter | Electricity | 25 | Expired |
| US6479788B1 | Method and apparatus of making a hole in a printed circuit board | Performing Operations; Transporting | 24 | Expired |
| US6921820B2 | Method for forming cellulose | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5349084A | Process for recovering high-purity organic acid | Chemistry; Metallurgy | 19 | Expired |
| US5024562A | Pressure foot for printed circuit board drilling machine | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4872787A | Method of drilling printed circuit board | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5087156A | Printed circuit board boring machine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5433878A | Method for producing fine particles of barium ferrite | Chemistry; Metallurgy | 17 | Expired |
| US5078558A | Low mass spindle and Z-axis unit | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5332341A | Pressure foot of printed circuit board drilling apparatus | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6531677B2 | Method and apparatus for drilling printed wiring boards | Electricity | 13 | Expired |
| US7531767B2 | Method and apparatus for laser perforating printed circuit board | Emerging Cross-Sectional Technologies | 10 | Active |
| US5108236A | Low mass spindle and Z-axis unit | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7205501B2 | Laser machining method and laser machining apparatus | Performing Operations; Transporting | 9 | Expired |
| US5199830A | Printed circuit board presser device in drilling machine | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5480630A | Process for producing fine metal oxide particles | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5066171A | Method for drilling a printed circuit board | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.