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For the Inventor, By the Inventor

Tokyo, Japan

Masakazu Yamashina

This inventor holds 10 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1989-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masakazu Yamashina. Retrieved from https://idiyas.com/inventor/masakazu-yamashina

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 6

Forward Citations = 109(Granted Patents)


Company Filing History:

goldMedal10 out of 36,718 
 
Nec Corporation
 patents

Years Active: 1989-2008

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10 patents (USPTO):Explore Patents
1. 7366821 - High-speed memory system (2008-04-29),
2. 6229360 - High speed synchronization circuit in semiconductor integrated circuit (2001-05-08),
3. 6094068 - CMOS logic circuit and method of driving the same (2000-07-25),
4. 5801570 - Semiconductor intergrated circuit with MOS transistors compensated of (1998-09-01),
5. 5742195 - Semiconductor integrated circuit with MOS Transistors compensated of (1998-04-21),
6. 5686853 - Driver circuitry adjusted to allow high speed driving and reduce (1997-11-11),
7. 5585754 - Integrated digital circuit (1996-12-17),
8. 5559461 - Drive circuit detecting slow signal transition (1996-09-24),
9. 4985861 - High speed digital signal processor for signed digit numbers (1991-01-15),
10. 4849921 - Arithmetic circuit for calculating the absolute value of the difference (1989-07-18),

Title: Masakazu Yamashina: Innovator in High-Speed Memory Systems

Introduction

Masakazu Yamashina is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in high-speed memory systems. With a total of 10 patents to his name, Yamashina continues to push the boundaries of innovation in his field.

Latest Patents

Yamashina's latest patents include a high-speed memory system that features a memory controller and multiple memories connected via a switch. This innovative design allows for higher data transmission speeds by suppressing reflection and loads on the bus. Another notable patent is a high-speed synchronization circuit in semiconductor integrated circuits. This circuit includes two latching circuits that transfer input signals in response to clock signal transitions, ensuring synchronization that is unaffected by fluctuations in temperature or power source.

Career Highlights

Masakazu Yamashina has had a distinguished career at NEC Corporation, where he has been instrumental in developing cutting-edge technologies. His work has not only advanced the capabilities of memory systems but has also contributed to the overall progress in semiconductor design.

Collaborations

Yamashina has collaborated with notable colleagues such as Masayuki Mizuno and Tadayoshi Enomoto. These partnerships have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Masakazu Yamashina's contributions to high-speed memory systems and semiconductor technology highlight his role as a leading inventor in the industry. His innovative patents and collaborations continue to shape the future of technology.

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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