Tsugito Maruyama

This inventor holds 26 USPTO granted patents and 1 published patent application, plus 2 CIPO patents and 1 EPO patent, primarily in Control Systems. Top assignees: Fujitsu Corporation, Toshiba Storage Device Corporation. Active years: 1989-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsugito Maruyama. Retrieved from https://idiyas.com/inventor/tsugito-maruyama

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

USPTO Granted Patents = 26 (Patent Applications = 1)

% Patents Active = 61.5

CIPO Patents = 2

EPO Patents = 1 (Patent Applications = 1)

Average Co-Inventor Count = 2.9

ph-index = 12

Forward Citations = 402(Granted Patents)

Location History:

Machida, JP (1989 - 1996)
Kawasaki, JP (1996 - 2016)
Yamato, JP (2013 - 2016)

Company Filing History:

Toshiba Storage Device Corporation

patents

Years Active: 1989-2016

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Areas of Expertise:

Control Device

Power Supply

Matrix Generation

Engine Control

Signal Processing

Magnetic Storage

Information Processing

Manipulator Simulation

Three-Dimensional Measurement

Orientation Determination

Wiring Connection

26 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9438107 - Control device, control method, and power supply device (2016-09-06),

2. 9235201 - Matrix generation technique and plant control technique (2016-01-12),

3. 8909503 - Matrix generation technique and plant control technique (2014-12-09),

4. 8560206 - Engine control apparatus and method (2013-10-15),

5. 8428849 - Engine control program, method and apparatus (2013-04-23),

6. 8111474 - Eccentricity correction method, signal processing circuit, magnetic storage apparatus and perpendicular magnetic recording medium (2012-02-07),

7. 7787200 - Disk-device correcting system, information managing device, master-disk producing device, and master-disk producing method (2010-08-31),

8. 7630155 - Eccentricity correction method, signal processing circuit, magnetic storage apparatus and perpendicular magnetic recording medium (2009-12-08),

9. 7508620 - Disk apparatus, information processing system, and information providing apparatus (2009-03-24),

10. 7324295 - Method of detecting position of head in recording medium drive (2008-01-29),

11. 7130158 - Head arm of magnetic disk device (2006-10-31),

12. 6597540 - Head arm having through hole for making head arm lightweight, head moving mechanism and disk unit having the head arm (2003-07-22),

13. 6157902 - Disassembly route producing apparatus, assembly route producing (2000-12-05),

14. 5994862 - Automatic wiring connection apparatus (1999-11-30),

15. 5943056 - Interference checking method (1999-08-24),

Title: **Tsugito Maruyama: A Visionary Inventor from Kawasaki**

Introduction

Tsugito Maruyama, an influential inventor based in Kawasaki, Japan, has made significant contributions to technology with a remarkable portfolio of 26 patents. His innovations primarily focus on control devices and methods, showcasing his expertise in electrical engineering and automation.

Latest Patents

Maruyama's latest patents include groundbreaking inventions such as a Control Device, Control Method, and Power Supply Device. This control device features a power supply circuit that adeptly regulates output voltage through a switching element. The design incorporates a generation unit responsible for generating a reference signal based on the output voltage, while a PWM unit creates a PWM signal by comparing the reference signal with a carrier signal. Additionally, a switching unit modifies the frequency of the carrier signal through amplitude adjustments, thereby enhancing efficiency in both power delivery and signal processing.

Another notable patent involves innovative Matrix Generation Technique and Plant Control Technique. This disclosure presents equations for model predictive control simplified into matrix operational expressions, significantly optimizing computational efficiency. The size of the coefficient matrix is minimized, allowing real-time solutions for plant control systems, vastly improving the responsiveness and precision of automation in various industrial settings.

Career Highlights

Throughout his career, Tsugito Maruyama has demonstrated a commitment to innovation while working with leading firms like Fujitsu Corporation and Toshiba Storage Device Corporation. His experiences at these prestigious companies have been instrumental in shaping his inventive mindset and developing advanced technological solutions.

Collaborations

Maruyama has collaborated with industry peers such as Yuichi Sato and Mitsunori Hirata, fostering a creative environment that encourages the exchange of ideas and collaborative problem-solving. These partnerships have undoubtedly contributed to his success as an inventor by facilitating a synergy of expertise and insight within the fields of engineering and technology.

Conclusion

In conclusion, Tsugito Maruyama's contributions to innovation are both significant and impactful. His extensive patent portfolio and collaborative spirit highlight his dedication to advancing technology, particularly in the realm of control systems. As industries continue to evolve, inventors like Maruyama play a critical role in pioneering the future of automation and electrical engineering.

Profile summary based on public USPTO records.