Kazumasa Fujioka

This inventor holds 10 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Cable, Inc.. Active years: 1981-1999.

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

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

Calculating rank

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.4

ph-index = 7

Forward Citations = 176(Granted Patents)

Location History:

Shimoinayoshi, JP (1981 - 1982)
Ibaraki, JP (1982 - 1988)
Ibaraki-ken, JP (1997 - 1999)

Company Filing History:

where one patent can have more than one assignee

Years Active: 1981-1999

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5925929 - Cooling apparatus for electronic elements (1999-07-20),

2. 5651414 - Heat-pipe type cooling apparatus (1997-07-29),

3. 4748315 - Molecular beam source (1988-05-31),

4. 4672392 - Thermal head for thermal printer (1987-06-09),

5. 4664062 - Apparatus for manufacturing semiconductors (1987-05-12),

6. 4587399 - Thermal head (1986-05-06),

7. 4580522 - Rotary substrate holder of molecular beam epitaxy apparatus (1986-04-08),

8. 4335324 - Rotor for hydrogen-cooled rotary electric machines (1982-06-15),

9. 4311931 - Rotor for hydrogen-cooled rotary electric machines (1982-01-19),

10. 4246503 - Gas flow cooling system for a rotary electric machine (1981-01-20),

Title: Kazumasa Fujioka: Innovator in Cooling Technology

Introduction

Kazumasa Fujioka is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of cooling technology, particularly for electronic devices. With a total of 10 patents to his name, Fujioka's work has had a substantial impact on the efficiency and performance of electronic elements.

Latest Patents

Among his latest innovations is a cooling apparatus for electronic elements. This apparatus features an electronic element unit that includes a base member, a thermal conductive electric insulating layer, and multiple electronic elements. It also incorporates a cooling unit that is detachably kept in pressure contact with the base member. This cooling unit consists of a cooling block, at least one heat pipe containing a refrigerant, and a series of radiation fins. Another notable patent is a heat-pipe type cooling apparatus designed to enhance performance in low ambient temperatures. This invention aims to reduce the condensation capacity of selected heat pipes, facilitating the start-up of the cooling apparatus even when the working fluid has frozen.

Career Highlights

Kazumasa Fujioka has worked with notable companies such as Hitachi, Ltd. and Hitachi Cable, Inc. His experience in these organizations has allowed him to develop and refine his innovative cooling technologies.

Collaborations

Fujioka has collaborated with several talented individuals in his field, including Wataru Nakayama and Heikichi Kuwahara. These partnerships have contributed to the advancement of his inventions and the overall progress in cooling technology.

Conclusion

Kazumasa Fujioka's contributions to cooling technology have established him as a key figure in the field. His innovative patents and collaborations reflect his commitment to enhancing the performance of electronic devices.

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]