Takuro Sekiya
68Patents
20h-index
50Co-inventors
91Inventor score
Filing activity: Oct 12, 1982 → Feb 8, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4990939A | Bubble jet printer head with improved operational speed | Performing Operations; Transporting | 126 | Expired |
| US5610637A | Ink jet recording method | Performing Operations; Transporting | 92 | Expired |
| US5172139A | Liquid jet head for gradation recording | Performing Operations; Transporting | 79 | Expired |
| US5657060A | Ink jet recording head having means for controlling ink droplets | Performing Operations; Transporting | 56 | Expired |
| US6975663B2 | Surface-emission laser diode operable in the wavelength band of 1.1-7μm and optical telecommunication system using such a laser diode | Electricity | 56 | Expired |
| US5877786A | Ink jet recording method and head | Performing Operations; Transporting | 47 | Expired |
| US6039425A | Ink jet recording method and head | Performing Operations; Transporting | 45 | Expired |
| US5754202A | Ink jet recording apparatus | Performing Operations; Transporting | 44 | Expired |
| US5293182A | Liquid jet recording head with selected bubble disappearance position | Performing Operations; Transporting | 42 | Expired |
| US5729257A | Ink jet recording head with improved ink jetting | Performing Operations; Transporting | 41 | Expired |
| US6338545B1 | Liquid jet recording apparatus using a fine particle dispersion recording composition | Performing Operations; Transporting | 39 | Expired |
| US5420618A | Ink jet recording method and apparatus having drop size control by using plural control electrodes | Performing Operations; Transporting | 36 | Expired |
| US5389962A | Ink jet recording head assembly | Performing Operations; Transporting | 34 | Expired |
| US7012878B2 | Optical recording medium and optical recording process using the same | Physics | 30 | Expired |
| US6193348A | On demand type ink jet recording apparatus and method | Performing Operations; Transporting | 28 | Expired |
| US5412413A | Method and apparatus for making liquid drop fly to form image by generating bubble in liquid | Performing Operations; Transporting | 27 | Expired |
| US5600356A | Liquid jet recording head having improved radiator member | Performing Operations; Transporting | 25 | Expired |
| US6227639A | Ink jet recording method and head | Performing Operations; Transporting | 24 | Expired |
| US6554401B2 | Liquid jet recording apparatus using a fine particle dispersion recording composition | Performing Operations; Transporting | 20 | Expired |
| US7245647B2 | Surface-emission laser diode operable in the wavelength band of 1.1-1.7mum and optical telecommunication system using such a laser diode | Electricity | 20 | Expired |
| US6568778B1 | Liquid jet recording apparatus and method | Performing Operations; Transporting | 20 | Expired |
| US4504844A | Ink jet printing apparatus | Performing Operations; Transporting | 18 | Expired |
| US6598959B2 | Liquid jet recording apparatus using a fine particle dispersion recording composition | Performing Operations; Transporting | 17 | Expired |
| US6918666B2 | Fabrication of functional device mounting board making use of inkjet technique | Electricity | 17 | Expired |
| US7553375B2 | Fabrication of functional device mounting board making use of inkjet technique | Electricity | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.