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Kanagawa, Japan

Semiconductor Technology Academic Research Center

USPTO Granted Patents = 135

% Expired Patents = 71.1

Forward Citations = 1,023

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255 inventors (with patents filed for the assignee):

Masaki Yoshimaru (12 out of 13 patents)

Haruo Kobayashi (11 out of 19 patents)

Tetsuya Hirose (8 out of 8 patents)

4. Koichiro Mashiko (8 out of 58 patents)

5. Shoji Kawahito (7 out of 73 patents)

6. Yuji Osaki (7 out of 7 patents)

7. Atsushi Iwata (7 out of 18 patents)

8. Makoto Nagata (6 out of 11 patents)

9. Junichi Koike (5 out of 56 patents)

10. Hiroshi Kawaguchi (5 out of 88 patents)

11. Noriyoshi Shimizu (5 out of 50 patents)

12. Takeshi Yoshida (5 out of 6 patents)

13. Hiroshi Ishiwara (5 out of 7 patents)

14. Kenichi Okada (4 out of 69 patents)

15. Mayumi Nakasato (4 out of 26 patents)

Core Competencies:

Analog-to-Digital Converter

Differential Amplifier

Low Power Consumption

Voltage-Controlled Oscillator

Phase-Change Memory

Multilevel Interconnect

Simulation Method

High Frequency Oscillator

Reconfigurable Logic Block

Time-to-Digital Converter

Pipelined A/D Converter

MEMS Resonator

135 patents: Sort by Forward Citations

1. 8963124 - Semiconductor device including a plurality of different functional elements and method of manufacturing the same (2015-02-24),

2. 8941524 - TD converter and AD converter with no operational amplifier and no switched capacitor (2015-01-27),

3. 8896378 - Differential amplifier circuit with ultralow power consumption provided with adaptive bias current generator circuit (2014-11-25),

4. 8860511 - Frequency divider and PLL circuit (2014-10-14),

5. 8829985 - Time difference amplifier circuit (2014-09-09),

6. 8803725 - Single slope AD converter circuit provided with compartor for comparing ramp voltage with analog input voltage (2014-08-12),

7. 8780010 - Metamaterial provided with at least one spiral conductor for propagating electromagnetic wave (2014-07-15),

8. 8779951 - Multi-bit delta-sigma time digitizer circuit and calibration method thereof (2014-07-15),

9. 8709939 - Semiconductor device having a multilevel interconnect structure and method for fabricating the same (2014-04-29),

10. 8692701 - Pipelined A/D converter circuit provided with A/D converter circuit parts of stages each including precharge circuit (2014-04-08),

11. 8692623 - Relaxation oscillator circuit including two clock generator subcircuits having same configuration operating alternately (2014-04-08),

12. 8618870 - Voltage characteristic regulating method of latch circuit, voltage characteristic regulating method of semiconductor device, and voltage characteristic regulator of latch circuit (2013-12-31),

13. 8614570 - Reference current source circuit including added bias voltage generator circuit (2013-12-24),

14. 8600443 - Sensor network system for acquiring high quality speech signals and communication method therefor (2013-12-03),

15. 8587336 - Reconfigurable logic block, programmable logic device provided with the reconfigurable logic block, and method of fabricating the reconfigurable logic block (2013-11-19),

Company Overview

The Semiconductor Technology Academic Research Center, located in Kanagawa, Japan, specializes in the development and research of advanced semiconductor technologies. Its primary focus is on analog-digital converters, which are essential for converting analog signals into digital data. The center also explores core technology topics such as differential amplifiers, low power consumption strategies, voltage-controlled oscillators, and phase-change memory. Through innovative simulation methods and high-frequency oscillators, the center aims to enhance the performance and efficiency of semiconductor devices.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

135 Patents

#31 in Kanagawa

#919 in Japan

#5,991 in the World

Kanagawa, Japan

Semiconductor Technology Academic Research Center

Forward Citations = 1,023

255 inventors:

Masaki Yoshimaru (12 out of 13 patents)

Haruo Kobayashi (11 out of 19 patents)

Tetsuya Hirose (8 out of 8 patents)

4. Koichiro Mashiko (8 out of 58 patents)

5. Shoji Kawahito (7 out of 73 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Semiconductor Technology Academic Research Center. Retrieved from https://idiyas.com/company/semiconductor-technology-academic-research-center

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

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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