Inventor
Dan Ozasa
Inventor
Kanagawa, JP
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television24%
G02BOptical elements, systems or apparatus17%
G06KGraphical data reading13%
B41JTypewriters11%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses11%
H03KPulse technique9%
G03GElectrography7%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%
H03HImpedance networks, e.g. resonant circuits2%
H04LTransmission of digital information, e.g. telegraphic communication2%
PatentTitleYear
9,770,921'High-frequency dielectric heating device and image forming apparatus'20179,548,745'Phase-detector circuit and clock-data recovery circuit'20178,947,058'Switching power supply device, AC power supply device, and image forming apparatus'20158,743,169'Pulse-modulation-signal generating device, light-source device, and optical scanning device'20148,446,444'Optical scanning device and image forming apparatus'20138,270,026'Light source driving device with relationship-based drive signal generating circuit, optical scanning device, and image forming apparatus'20128,237,760'Light-source driving device, optical scanning device, and counting method'20128,194,113'Pulse-modulation-signal generating device, light-source device, and optical scanning device'20128,005,321'Pixel clock generator, optical scanner, and image forming apparatus'20117,973,817'Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus'20117,936,493'Dot position correcting apparatus, optical scanning apparatus, imaging apparatus, and color imaging apparatus'20117,936,367'Image forming apparatus controlling the output level of the light source'20117,863,946'Electric signal outputting apparatus with a switching part, an impedance matching part, and an auxiliary switching part'20117,834,902'Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus'20107,671,882'Semiconductor laser modulation driving apparatus and image forming apparatus'20107,656,422'Pulse width modulaton device and image forming apparatus'20107,528,625'Image forming apparatus'20097,515,170'Optical scanner and image forming apparatus'20097,496,121'Laser modulating and driving device and image reproducing apparatus using the same'20097,463,278'Pixel clock generation circuit'20087,400,210'Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatus'20087,327,379'Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus'20087,212,224'Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus'20077,193,480'Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatus'20077,009,430'Circuit for generating pixel clock with fine phase control'20066,933,957'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'20056,927,789'Pixel clock generating device, laser scanning device, and image forming device'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2010Patents assigned to RICOH KK (13)· patent assignee history
2005–2011Based in Tokyo, JP· patent location history
2006–2017Based in Kanagawa, JP· patent location history
2010–2017Patents assigned to RICOH CO LTD (14)· patent assignee history
2012–2017Patents assigned to OZASA DAN (8)· patent assignee history
2012–2013Patents assigned to ISHIDA MASAAKI (3)· patent assignee history
2012–2013Patents assigned to NIHEI YASUHIRO (3)· patent assignee history
2017Based in Yokohama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH CO LTD | 14 | 2010–2017 |
| RICOH KK | 13 | 2005–2010 |
| OZASA DANself | 8 | 2012–2017 |
| ISHIDA MASAAKI | 3 | 2012–2013 |
| NIHEI YASUHIRO | 3 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 22 | 2006–2017 |
| Tokyo, JP | 4 | 2005–2011 |
| Yokohama, JP | 1 | 2017 |