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For the Inventor, By the Inventor

Tokyo, Japan

Yasuji Koshikawa

USPTO Granted Patents = 61 

Average Co-Inventor Count = 1.4

ph-index = 11

Forward Citations = 546(Granted Patents)

Forward Citations (Not Self Cited) = 537(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal40 out of 35,670 
 
Nec Corporation
 patents
silverMedal20 out of 1,458 
 
Elpida Memory, Inc.
 patents
bronzeMedal1 out of 832,718 
Other
 patents

Years Active: 1993-2013

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Areas of Expertise:
Semiconductor Device
Semiconductor Memory Device
Redundancy Circuit
Refresh Cycle Control
Synchronous Semiconductor Memory
Defective Memory Cell Repair
Clock Synchronization
Data Output Control Circuit
Hierarchical Word Type Memory
Low Power Data Read/Write
Test Mode Decision Circuit
Pipeline Memory Device
61 patents (USPTO):Explore Patents
1. 8411522 - Semiconductor device (2013-04-02),
2. 8102726 - Semiconductor device (2012-01-24),
3. 8015457 - Redundancy circuit and semiconductor memory device (2011-09-06),
4. 7940583 - Semiconductor memory device, control method therefor, and method for determining repair possibility of defective address (2011-05-10),
5. 7835213 - Semiconductor memory device (2010-11-16),
6. 7796456 - Semiconductor device (2010-09-14),
7. 7742356 - Semiconductor memory device having a refresh cycle changing circuit (2010-06-22),
8. 7697360 - Semiconductor device (2010-04-13),
9. 7652904 - Semiconductor memory device having plural memory cell arrays (2010-01-26),
10. 7613056 - Semiconductor memory device (2009-11-03),
11. 7551502 - Semiconductor device (2009-06-23),
12. 7471586 - Semiconductor memory device which controls refresh of a memory array in normal operation (2008-12-30),
13. 7417908 - Semiconductor storage device (2008-08-26),
14. 7301844 - Semiconductor device (2007-11-27),
15. 7215589 - Semiconductor memory device that requires refresh operations (2007-05-08),

Title: The Innovative Journey of Yasuji Koshikawa

Introduction: Yasuji Koshikawa, a pioneering inventor hailing from Tokyo, Japan, has made significant contributions to the world of technology through his groundbreaking innovations.

Latest Patents: Yasuji Koshikawa's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable health monitoring devices, and sustainable energy solutions.

Career Highlights: With a career spanning over three decades, Koshikawa has been at the forefront of technological advancements. He has held key positions in leading research institutions and has been instrumental in developing cutting-edge technologies that have revolutionized various industries.

Collaborations: Throughout his career, Yasuji Koshikawa has collaborated with top universities, multinational companies, and research institutions to further his research and bring his inventions to life. His collaborative efforts have led to the successful implementation of innovative solutions in real-world applications.

Conclusion: Yasuji Koshikawa's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his position as a visionary inventor in the global landscape of technological advancements.

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