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For the Inventor, By the Inventor

Tokyo, Japan

Takehiko Umeyama

This inventor holds 35 USPTO granted patents and 1 published patent application, primarily in Semiconductor Circuits. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Renesas Electronics Corporation, Renesas Technology Corp.. Active years: 1992-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takehiko Umeyama. Retrieved from https://idiyas.com/inventor/takehiko-umeyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 35 

% Patents Active = 71.4

Average Co-Inventor Count = 2.0

ph-index = 6

Forward Citations = 210(Granted Patents)


Location History:

  • Sagamihara, JP (1995)
  • Itami, JP (1992 - 1996)
  • Hyogo, JP (1994 - 1996)
  • Tokyo, JP (1997 - 2013)
  • Kanagawa, JP (2014)
  • Kawasaki, JP (2016)

Company Filing History:

goldMedal23 out of 21,351 
 
Mitsubishi Denki Kabushiki Kaisha
 patents
silverMedal5 out of 7,654 
 
Renesas Electronics Corporation
 patents
bronzeMedal5 out of 3,781 
 
Renesas Technology Corp.
 patents
4. 3 out of 177 
 
Mitsubishi Electric Engineering Company, Limited
 patents
5. 1 out of 20 
 
Renesas Technology America, Inc.
 patents
6. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1992-2016

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Areas of Expertise:
Semiconductor Integrated Circuit
Driving Circuit
Piezoelectric Element
Laser Diode
Optical Information Reproduction
Magneto-Resistive Head
Signal Processing
Current Driver Circuit
Amplifier Circuit
Temperature Measurement
Magnetic Recording
Threshold Voltage
35 patents (USPTO):Explore Patents
1. 9252750 - Semiconductor integrated circuit and operating method thereof (2016-02-02),
2. 8786162 - Device for driving a piezoelectric element (2014-07-22),
3. 8344654 - Driving circuit for and semiconductor device for driving laser diode (2013-01-01),
4. 8098023 - Driving circuit for and semiconductor device for driving laser diode (2012-01-17),
5. 8064300 - Optical disk apparatus, signal processing semiconductor integrated circuit constituting the same, and operation method (2011-11-22),
6. 7791288 - Driving circuit for and semiconductor device for driving laser diode (2010-09-07),
7. 7643261 - Semiconductor device (2010-01-05),
8. 7372882 - Driving circuit for and semiconductor device for driving laser diode (2008-05-13),
9. 7187513 - Differential magneto-resistive head pre-amplifiers for single polarity power supply applications (2007-03-06),
10. 6998733 - Pulse current generation circuit (2006-02-14),
11. 6783274 - Device for measuring temperature of semiconductor integrated circuit (2004-08-31),
12. 6731449 - Magnetic recording writing circuit (2004-05-04),
13. 6683487 - Current driver circuit for supplying write current to a write head while changing a flow direction of the write current (2004-01-27),
14. 6339567 - Method of and apparatus for optical information reproduction (2002-01-15),
15. 6320830 - Optical information reproduction device and signal processing circuit used therein (2001-11-20),

Title: Innovations and Contributions of Takehiko Umeyama in Semiconductor Technology

Introduction: Takehiko Umeyama is a distinguished inventor based in Tokyo, Japan, recognized for his remarkable contributions to semiconductor technology. With a total of 35 patents to his name, he has made significant advancements in the field, particularly in power supply circuits and piezoelectric devices.

Latest Patents: Umeyama's recent patents demonstrate his innovative approach to solving important technical challenges. One of his notable inventions is a patented semiconductor integrated circuit and operating method designed to reduce voltage drop when selecting between main and auxiliary power supply voltages. This invention not only enhances performance but also minimizes power consumption of the auxiliary supply. Another significant patent is for a device aimed at driving a piezoelectric element, which allows an output voltage to accurately follow a control voltage during discharging. This technological advancement incorporates a charging circuit and a discharging circuit that operate based on real-time voltage comparisons.

Career Highlights: Throughout his career, Takehiko Umeyama has been associated with prestigious companies, including Mitsubishi Electric Corporation and Renesas Technology Corporation. His work at these companies has been instrumental in the development and enhancement of new technologies within the semiconductor industry.

Collaborations: Collaboration has played a vital role in Umeyama's innovations. He has worked alongside esteemed colleagues such as Toru Takeuchi and Tsuyoshi Horiuchi, contributing to research and development projects that have furthered the field of electronics.

Conclusion: Takehiko Umeyama stands out as a significant figure in the realm of semiconductor innovations. His numerous patents not only reflect his expertise but also pave the way for future advancements in technology. As the industry continues to evolve, his contributions will remain influential for years to come.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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