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For the Inventor, By the Inventor

Osaka, Japan

Mitsuru Mariyama

USPTO Granted Patents = 10

Average Co-Inventor Count = 2.0

ph-index = 5

Forward Citations = 374(Granted Patents)


Location History:

  • Nara, JP (1994)
  • Kitakatsuraqi-gun, JP (2000)
  • Kitakatsuragi-gun, JP (1998 - 2007)
  • Katsuragi, JP (2008 - 2010)
  • Osaka, JP (2012 - 2014)

Company Filing History:

goldMedal10 out of 25,530 
 
Sharp Kabushiki Kaisha Corporation
 patents

Years Active: 1994-2014

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10 patents (USPTO):Explore Patents
1. 8810135 - LED drive circuit, LED illumination component, LED illumination device, and LED illumination system (2014-08-19),
2. 8421371 - LED drive circuit, LED illumination fixture, LED illumination device, and LED illumination system (2013-04-16),
3. 8258706 - LED drive circuit, LED illumination component, LED illumination device, and LED illumination system (2012-09-04),
4. 7764028 - LED drive circuit and LED light-emitting device (2010-07-27),
5. 7423298 - Bidirectional photothyristor chip, optical lighting coupler, and solid state relay (2008-09-09),
6. 7157747 - Bidirectional photothyristor chip, light-fired coupler and solid state relay (2007-01-02),
7. 6995408 - Bidirectional photothyristor chip (2006-02-07),
8. 6037613 - Bidirectional thyristor device (2000-03-14),
9. 5747836 - Semiconductor integrated circuit provided with thyristor (1998-05-05),
10. 5293051 - Photoswitching device including a MOSFET for detecting zero voltage (1994-03-08),

Title: Innovations of Mitsuru Mariyama in LED Technology

Introduction

Mitsuru Mariyama is a prominent inventor based in Osaka, Japan, known for his significant contributions to LED technology. With a total of 10 patents to his name, he has made remarkable advancements in the field of illumination systems.

Latest Patents

Mitsuru Mariyama's latest patents include an LED drive circuit, LED illumination component, LED illumination device, and LED illumination system. The LED drive circuit is designed to receive an alternating voltage to drive an LED. It features a current removal portion that eliminates unnecessary current from the supply line, ensuring that the LED only lights up when the appropriate drive current is present. Additionally, the LED drive circuit can be connected to a phase control dimmer, incorporating an edge detector to monitor the output voltage and a current extractor to adjust the current supplied to the LED based on the detected voltage edges.

Career Highlights

Mitsuru Mariyama has had a successful career at Sharp Kabushiki Kaisha Corporation, where he has been instrumental in developing innovative LED technologies. His work has not only advanced the efficiency of LED systems but has also contributed to the broader field of lighting solutions.

Collaborations

Mitsuru has collaborated with notable colleagues such as Hirohisa Warita and Yasuhiro Maruyama, further enhancing the innovative environment at Sharp Corporation.

Conclusion

Mitsuru Mariyama's contributions to LED technology exemplify the impact of innovation in modern lighting solutions. His patents reflect a deep understanding of electrical engineering and a commitment to advancing illumination technology.

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