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For the Inventor, By the Inventor

Kanagawa, Japan

Kazumasa Kohama

This inventor holds 17 USPTO granted patents. Top assignees: Sony Corporation, Sony Semiconductor Solutions Corporation. Active years: 1995-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumasa Kohama. Retrieved from https://idiyas.com/inventor/kazumasa-kohama

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

USPTO Granted Patents = 17

% Patents Active = 94.1

Average Co-Inventor Count = 1.2

ph-index = 10

Forward Citations = 734(Granted Patents)


Location History:

  • Tokyo, JP (2017)
  • Kanagawa, JP (1995 - 2020)

Company Filing History:

goldMedal15 out of 58,145 
 
Sony Corporation
 patents
silverMedal2 out of 3,298 
 
Sony Semiconductor Solutions Corporation
 patents

Years Active: 1995-2020

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17 patents (USPTO):Explore Patents
1. 10784557 - Signal processing circuit, signal processing module, and communication apparatus (2020-09-22),
2. 10276911 - Signal processing circuit, signal processing module, and communication apparatus (2019-04-30),
3. 9824986 - High-frequency device including high-frequency switching circuit (2017-11-21),
4. 9406696 - High-frequency device including high-frequency switching circuit (2016-08-02),
5. 9105564 - High-frequency device including high-frequency switching circuit (2015-08-11),
6. 8797697 - High frequency integrated circuit (2014-08-05),
7. 8598629 - High-frequency device including high-frequency switching circuit (2013-12-03),
8. 6704550 - Antenna switching circuit and communication system using the same (2004-03-09),
9. 6563366 - High-frequency Circuit (2003-05-13),
10. 5969560 - Switching circuit at high frequency with low insertion loss (1999-10-19),
11. 5917362 - Switching circuit (1999-06-29),
12. 5825227 - Switching circuit at high frequency with low insertion loss (1998-10-20),
13. 5812939 - Switch semiconductor integrated circuit and communication terminal device (1998-09-22),
14. 5731607 - Semiconductor integrated circuit device (1998-03-24),
15. 5717356 - Low insertion loss switch (1998-02-10),

Title: Kazumasa Kohama: Innovator in Signal Processing Technology

Introduction

Kazumasa Kohama is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of signal processing, holding a total of 17 patents. His work has been instrumental in advancing communication technologies.

Latest Patents

Kohama's latest patents include innovations such as a signal processing circuit, a signal processing module, and a communication apparatus. One notable example of his work is a signal processing circuit that features a directional coupler and a termination part. The directional coupler consists of a main line that serves as a transmission path for an RF signal, along with a sub-line that forms a coupled line with the main line. The termination part includes devices that can be connected between ground and a first port at the end of the sub-line. This signal processing circuit is designed to switch the devices of the termination part based on the frequency of the RF signal. The phase of the return signal, which is input as a coupling signal to the termination part via the first port, is opposite to the phase of an isolation signal supplied to a second port at the other end of the sub-line, which is connected to an output port of the coupling signal.

Career Highlights

Throughout his career, Kazumasa Kohama has worked with notable companies, including Sony Corporation and Sony Semiconductor Solutions Corporation. His experience in these organizations has allowed him to develop and refine his expertise in signal processing technologies.

Collaborations

Kohama has collaborated with several talented individuals in his field, including Kenji Noguchi and Kazuto Kitakubo. These collaborations have contributed to the innovative advancements in his work.

Conclusion

Kazumasa Kohama's contributions to signal processing technology have made a lasting impact on the industry. His innovative patents and collaborations with leading companies and individuals highlight his role as a key figure in the advancement of communication technologies.

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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