Nobuo Karaki

This inventor holds 21 USPTO granted patents, primarily in Asynchronous Circuit Design. Top assignee: Seiko Epson Corporation. Active years: 1986-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuo Karaki. Retrieved from https://idiyas.com/inventor/nobuo-karaki

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

USPTO Granted Patents = 21

% Patents Active = 38.1

Average Co-Inventor Count = 1.1

ph-index = 6

Forward Citations = 156(Granted Patents)

Location History:

Nagano, JP (1997)
Suwa, JP (1986 - 2010)
Matsumot, JP (2010)
Matsumoto, JP (2006 - 2015)

Company Filing History:

21 out of 34,268

Seiko Epson Corporation

patents

Years Active: 1986-2015

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Areas of Expertise:

Asynchronous Correlation Circuit

Electronic Display System

Semiconductor Device

Hybrid Semiconductor Device

Arithmetic Unit

Time Correction Circuit

Electro-Optical Device

Asynchronous Microprocessor

Printing Device

Data Transfer System

Image Display Method

Mechanical Energy Storage

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8995500 - Asynchronous correlation circuit, asynchronous full adder circuit, calculation device, correlation device, asynchronous maximum value N detection circuit, and satellite signal acquisition device (2015-03-31),

2. 8253456 - Time correction circuit and electronic apparatus (2012-08-28),

3. 8175171 - Transmitter, receiver, transmitting method, receiving method, variable-length serial burst data transfer system, semiconductor device and hybrid semiconductor device (2012-05-08),

4. 8175170 - Transmitter, receiver, method for transmitting, method for receiving, fixed length serial burst data transfer system, semiconductor device, and hybrid semiconductor device (2012-05-08),

5. 8154509 - Electronic display system, electronic paper writing device, electronic paper and method for manufacturing the same (2012-04-10),

6. 7870318 - Asynchronous serial communication method and asynchronous serial communication device (2011-01-11),

7. 7844654 - Arithmetic unit of arbitrary precision, operation method for processing data of arbitrary precision and electronic equipment (2010-11-30),

8. 7834843 - Electronic display system, electronic paper writing device, electronic paper and method for manufacturing the same (2010-11-16),

9. 7798734 - Printing device (2010-09-21),

10. 7701424 - Display panel having a substratum and a plurality of scan lines formed on the substratum, a display device, and electronic device thereof (2010-04-20),

11. 7693930 - Asynchronous full adder, asynchronous microprocessor and electronic apparatus (2010-04-06),

12. 7646397 - Electro-optical device, method for displaying an image, electronic device, and display structure (2010-01-12),

13. 7616819 - Detecting device and authentication device (2009-11-10),

14. 7418676 - Asynchronous circuit design tool and computer program product (2008-08-26),

15. 7395450 - Synchronous/asynchronous interface circuit and electronic device (2008-07-01),

Title: **Nobuo Karaki: Innovating Circuits from Matsumoto**

Introduction

Nobuo Karaki, a prominent inventor based in Matsumoto, Japan, has made significant contributions to the field of electronics and circuits. With a remarkable portfolio of 21 patents, he continues to be at the forefront of technological innovation.

Latest Patents

Karaki's latest patents include various advanced circuit designs and systems. Notable among these is his work on the asynchronous correlation circuit, which includes a unique architecture with a first and second data supply unit that dual-rail-encodes sequence data. This circuit efficiently manages the timing of data calculation through an addition result storage unit and an asynchronous full addition unit. Another inventive contribution by Karaki is the time correction circuit, designed to measure time periods and correct them based on signals received through electromagnetic waves. His inventions, like the asynchronous maximum value N detection circuit and satellite signal acquisition device, further demonstrate his expertise in modern circuit applications.

Career Highlights

Karaki is currently affiliated with Seiko Epson Corporation, where he plays a pivotal role in advancing electronic circuitry. His innovative spirit has led to the creation of a range of devices that improve performance and efficiency in various electronic applications.

Collaborations

Throughout his career, Nobuo Karaki has collaborated with talented coworkers such as Shoichi Nagao and Jinichi Nakamura. Their collective efforts have resulted in remarkable advancements in circuit technology, exemplifying the power of teamwork in driving innovation.

Conclusion

Nobuo Karaki's dedication to innovation in electronics is evident through his extensive patent portfolio and ongoing projects at Seiko Epson Corporation. His contributions significantly impact the industry, paving the way for new technologies and applications that enhance our electronic experiences.

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]