Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7701480 | Light-source driving device, optical scanning device, and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Jun Tanabe | 2010-04-20 |
| 7671882 | Semiconductor laser modulation driving apparatus and image forming apparatus | Dan Ozasa, Masaaki Ishida, Yasuhiro Nihei | 2010-03-02 |
| 7528625 | Image forming apparatus | Dan Ozasa, Masaaki Ishida, Yasuhiro Nihei | 2009-05-05 |
| 7515170 | Optical scanner and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2009-04-07 |
| 7496121 | Laser modulating and driving device and image reproducing apparatus using the same | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2009-02-24 |
| 7400210 | Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2008-07-15 |
| 7327379 | Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa | 2008-02-05 |
| 7271824 | Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocks | Masaaki Ishida, Yasuhiro Nihei, Yoshinori Hayashi | 2007-09-18 |
| 7256815 | Image forming method, image forming apparatus, optical scan device, and image forming apparatus using the same | Seizo Suzuki, Masaaki Ishida, Magane Aoki, Yasuhiro Nihei | 2007-08-14 |
| 7212224 | Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa | 2007-05-01 |
| 7193480 | Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatus | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2007-03-20 |
| 7009430 | Circuit for generating pixel clock with fine phase control | Yasuhiro Nihei, Masaaki Ishida, Dan Ozasa | 2006-03-07 |
| 6933957 | Pixel clock generation apparatus, pixel clock generation method, and image forming apparatus capable of correcting main scan dot position shift with a high degree of accuracy | Masaaki Ishida, Yasuhiro Nihei, Dan Ozasa | 2005-08-23 |
| 6927789 | Pixel clock generating device, laser scanning device, and image forming device | Dan Ozasa, Masaaki Ishida, Yasuhiro Nihei | 2005-08-09 |
| 6917639 | Laser driver circuit | Masaaki Ishida, Hidetoshi Ema, Yasuhiro Nihei, Hiroaki Kyougoku | 2005-07-12 |