Hiroyuki Maruoka

This inventor holds 20 USPTO granted patents, primarily in Flow Measurement Technology. Top assignees: Nissan Motor Company Limited, Nifco Inc.. Active years: 1977-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Maruoka. Retrieved from https://idiyas.com/inventor/hiroyuki-maruoka

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

USPTO Granted Patents = 20

% Patents Active = 95.0

Average Co-Inventor Count = 1.3

ph-index = 10

Forward Citations = 245(Granted Patents)

Location History:

Yokosuka, JA (1977)
Toyota, JP (1992)
Kanagawa, JP (1997)
Tokyo, JP (1997 - 1999)
Yokohama, JP (1979 - 2002)
Kanagawa-ken, JP (2002)

Company Filing History:

10 out of 13,420

Nissan Motor Company Limited

where one patent can have more than one assignee

Years Active: 1977-2002

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Areas of Expertise:

Buckle

Cord Fastener

Air-Fuel Mixture

Mass Flow Measuring

Electrostatic Apparatus

Ionized Mass Flow

Exhaust Gas Purification

Piston-Cylinder Damper

Container Design

Automobile Window Molding

Flow Control

20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. D467837 - Buckle (2003-01-01),

2. D465408 - Cord fastener (2002-11-13),

3. 6460232 - Buckle (2002-10-08),

4. D455337 - Cord fastener (2002-04-10),

5. D447442 - Buckle (2001-09-05),

6. 5893478 - Container for small articles with hidden cover locking device (1999-04-13),

7. D387726 - Peripheral molding for automobile window glass (1997-12-16),

8. 5695236 - Glass plate holding device (1997-12-09),

9. 5546704 - Glass holder (1996-08-20),

10. 5165324 - Piston-cylinder type air damper (1992-11-24),

11. 4280467 - Air-fuel mixture ratio control using electrostatic force (1981-07-28),

12. 4220045 - Mass flow measuring apparatus (1980-09-02),

13. 4203398 - Electrostatic apparatus for controlling flow rate of liquid (1980-05-20),

14. 4186601 - Mass flow measuring apparatus (1980-02-05),

15. 4183337 - Air-fuel mixture ratio control using electrostatic force (1980-01-15),

Title: Hiroyuki Maruoka: An Innovator in Fastener Technology

Introduction

Hiroyuki Maruoka, based in Yokohama, Japan, is a prolific inventor known for his contributions in the field of fastening technology. With a remarkable portfolio that includes 20 patents, he has established a significant presence in the innovation landscape, particularly within the automotive and plastics industries.

Latest Patents

Among his latest inventions are an innovative buckle and a versatile cord fastener. These patents reflect his commitment to creating practical solutions that meet the demands of modern engineering and consumer needs.

Career Highlights

Maruoka's career has been marked by significant tenures at notable companies, including Nissan Motor Company Limited and Nifco Inc. His work in these organizations has enabled him to apply his inventive skills to real-world applications, enhancing product efficiency and functionality.

Collaborations

Throughout his career, Hiroyuki has collaborated with esteemed colleagues such as Hatsuo Nagaishi and Kenji Masaki. These collaborations have fostered a rich environment for innovation, allowing them to combine their expertise to push the boundaries of fastening technologies.

Conclusion

Hiroyuki Maruoka stands out as a key figure in the realm of inventions related to fastening systems. His extensive patent portfolio and collaborative efforts underscore his dedication to innovation and his impact on the industries he has influenced. As technology continues to evolve, Maruoka's contributions will undoubtedly play a crucial role in shaping the future of fastening solutions.

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]