Jun Ashiwa
17Patents
11h-index
24Co-inventors
72Inventor score
Filing activity: May 9, 1979 → Jul 8, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5517222A | Ink jet recording apparatus having rotary drum with ink receptor | Performing Operations; Transporting | 112 | Expired |
| US5384587A | Multi-drop ink-jet recording method with compensation for image density non-uniformities | Electricity | 65 | Expired |
| US4255729A | High frequency filter | Electricity | 62 | Expired |
| US5430469A | Tone recording method using ink recording head | Physics | 44 | Expired |
| US5502466A | Doppler velocimeter and position information detection apparatus for use with objects having variations in surface depth | Physics | 29 | Expired |
| US5483332A | Displacement information detecting apparatus and doppler velocimeter apparatus | Physics | 22 | Expired |
| US5812250A | Doppler velocimeter and various kinds of apparatuses for signal processing thereof | Physics | 17 | Expired |
| US5930066A | Information recording apparatus | Physics | 14 | Expired |
| US4283697A | High frequency filter | Electricity | 14 | Expired |
| US5777640A | Liquid jet recording method using plural scanning nozzles and including first main scan, sub-scan, and second main-scan steps for recording pixels in tone | Physics | 14 | Expired |
| US5552879A | Doppler velocimeter | Physics | 11 | Expired |
| US6260939A | Tone recording method using ink jet recording head that records pixels using a plurality of liquid droplets | Physics | 10 | Expired |
| US5696578A | Frequency tracking method and apparatus, and Doppler velocity meter using the same | Physics | 7 | Expired |
| US6513906B1 | Recording apparatus and recording method | Performing Operations; Transporting | 6 | Expired |
| US6923522B2 | Recording apparatus and recording method | Performing Operations; Transporting | 2 | Expired |
| US6043622A | Motor drive controller | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7330321B2 | Reference magnetic signal recording device and method of manufacturing the same | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.