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For the Inventor, By the Inventor

Tokyo, Japan

Kouji Tanagawa

This inventor holds 16 USPTO granted patents. Top assignee: Oki Electric Industry Co., Ltd.. Active years: 1986-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Tanagawa. Retrieved from https://idiyas.com/inventor/kouji-tanagawa

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

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 9

Forward Citations = 297(Granted Patents)


Company Filing History:

goldMedal16 out of 4,980 
 
Oki Electric Industry Co., Ltd.
 patents

Years Active: 1986-2001

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16 patents (USPTO):Explore Patents
1. 6175881 - Microcontroller having a memory, a dedicated multitask memory, and switching circuit for selectively connecting the multitask memory to the internal or external bus (2001-01-16),
2. 5339271 - Semiconductor memory circuit (1994-08-16),
3. 5337280 - EEPROM circuit (1994-08-09),
4. 5231637 - Apparatus for testing a PLA by measuring a current consumed by the PLO (1993-07-27),
5. 5119330 - Nonvolatile memory system for multiple value storing (1992-06-02),
6. 5117380 - Random number generator driven by independent clock pulses (1992-05-26),
7. 5101483 - Instruction decoder simplification by reuse of bits to produce the same (1992-03-31),
8. 5088027 - Single-chip microcomputer (1992-02-11),
9. 5068783 - Microcomputer having a built-in PROM for storing an optional program (1991-11-26),
10. 5062075 - Microcomputer having security memory using test and destruction routines (1991-10-29),
11. 5059828 - Programmable logic array circuit having a gate to control an output (1991-10-22),
12. 4969087 - Single-chip microcomputer (1990-11-06),
13. 4875156 - Computer having a protection device to selectively block incorrect (1989-10-17),
14. 4866608 - Microprocessor with improved execution of instructions (1989-09-12),
15. 4788454 - Power-on reset circuit (1988-11-29),

Title: **Innovations by Kouji Tanagawa: Pioneering Microcontroller Technology**

Introduction

Kouji Tanagawa, an innovative inventor based in Tokyo, Japan, boasts an impressive portfolio of 16 patents. His contributions to the field of microcontrollers and semiconductor memory circuits have significantly advanced technology in these areas. His work exemplifies the fusion of practicality and innovative design, making him a notable figure in the realm of electronics engineering.

Latest Patents

Among his latest patents is a groundbreaking microcontroller designed to enhance multitasking capabilities. The patent describes a microcontroller that incorporates both a first memory, used by the CPU for arithmetic operations, and a second memory dedicated to multitask processes. This innovative design enables the device to store data transferred from external devices during CPU operations, utilizing bus switches to selectively connect its data buses. This configuration allows for efficient multitask processing without the need for expensive components like dual-port RAM.

Another noteworthy patent is for a semiconductor memory circuit, which consists of memory cells with two storage semiconductor elements. This design allows one of the elements to be made inoperative in response to operational control signals, facilitating the assessment of threshold voltage margins during write, erase, and read operations. This advancement presents a reliable method for monitoring performance in semiconductor technology.

Career Highlights

Kouji Tanagawa’s career is anchored at Oki Electric Industry Co., Ltd., where he has demonstrated a commitment to innovation in electronics. His role at Oki has allowed him to push the boundaries of current technology, leading to numerous patents that contribute to the company’s reputation for quality and innovation.

Collaborations

Throughout his career, Tanagawa has collaborated with esteemed colleagues, including Tomoaki Yoshida and Kazuhiko Miyazaki. Their combined expertise in electronics and microcontroller development has fostered a collaborative environment that advances their innovative projects and enhances the productivity of their research efforts.

Conclusion

Kouji Tanagawa stands out as a significant inventor in the field of microcontroller technology, with a proven track record reflected in his numerous patents. His contributions not only benefit Oki Electric Industry Co., Ltd., but also pave the way for future innovations in the electronics industry. As technology continues to evolve, Tanagawa’s work serves as an inspiring example of how inventive thinking can lead to breakthroughs that enhance daily life and industry capabilities.

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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