Company Filing History:

19 out of 33,464

Seiko Epson Corporation

1 out of 832,891

Other

patents

where one patent can have more than one assignee

Years Active: 2004-2016

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20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9392676 - Discharge lamp lighting device, projector, and method for driving discharge lamp (2016-07-12),

2. 8937436 - Light source device, projector, and driving method of discharge lamp (2015-01-20),

3. 8558471 - Light source device, projector, and driving method of discharge lamp (2013-10-15),

4. 8541955 - Discharge lamp lighting device, projector, and discharge lamp lighting device control method (2013-09-24),

5. 8264170 - Discharge lamp lighting device, method of driving discharge lamp, and projector (2012-09-11),

6. 8203280 - Light source device, projector, and driving method of discharge lamp (2012-06-19),

7. 8167438 - Light source device, projector, and driving method of discharge lamp (2012-05-01),

8. 8102128 - Driving method and driving device for discharge lamp, light source device, and image display device (2012-01-24),

9. 8089214 - Driving method and driving device for discharge lamp, light source device, and image display device (2012-01-03),

10. 8076861 - Driving method and driving device for discharge lamp, light source device, and image display device (2011-12-13),

11. 8044613 - Discharge lamp lighting device, control method thereof, and projector (2011-10-25),

12. 7999490 - Light source, projector, and method for driving light source (2011-08-16),

13. 7999488 - Ignition controller, light source, projector and ignition control method (2011-08-16),

14. 7946715 - Light source and projector (2011-05-24),

15. 7923940 - Discharge lamp lighting device and projector (2011-04-12),

Title: Kazuo Okawa: Innovator in Discharge Lamp Technology

Introduction

Kazuo Okawa, a prolific inventor based in Matsumoto, Japan, has made significant contributions to the field of lighting technology. With a remarkable portfolio of 20 patents, Okawa has focused primarily on developing advanced discharge lamp lighting devices and projectors.

Latest Patents

His latest patents include innovative solutions such as a discharge lamp lighting device designed to enhance efficiency and functionality. This device features a DC power supply unit that outputs a direct current, an inverter generating alternating current pulses to power the discharge lamp, and a control unit that can adjust the pulse waveform and width dynamically. Additionally, Okawa has developed a light source device and a driving method that aims to prevent biased consumption of electrodes within the discharge lamp, utilizing a driver that alters the duty ratio of the supplied alternating current based on a predetermined pattern.

Career Highlights

Throughout his career, Okawa has been associated with reputable companies in the electronics sector, including Seiko Epson Corporation and TDK Corporation. His expertise in electrical engineering has allowed him to innovate in ways that significantly advance lighting technologies used in various applications.

Collaborations

Okawa has collaborated with esteemed colleagues in his field, including Tetsuo Terashima and Kentaro Yamauchi. These partnerships have fostered an environment of creativity and have led to the development of groundbreaking technologies in discharge lamp systems.

Conclusion

With a commitment to innovation and excellence, Kazuo Okawa continues to impact the field of lighting technology. His inventions not only demonstrate his technical skill but also his dedication to solving complex challenges in lighting efficiency and functionality. As he progresses in his career, his contributions will likely shape the future of visual display technologies.

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