Tsukasa Hasegawa

This inventor holds 28 USPTO granted patents, primarily in Audio-Visual Devices. Top assignees: Hitachi, Ltd., Hitachi Maxell, Limited. Active years: 1995-2016.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsukasa Hasegawa. Retrieved from https://idiyas.com/inventor/tsukasa-hasegawa

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

USPTO Granted Patents = 28

% Patents Active = 75.0

Average Co-Inventor Count = 4.3

ph-index = 13

Forward Citations = 472(Granted Patents)

Location History:

Yokohama, JP (1995)
Chiyoda-ku, JP (2005)
Hiratsuka, JP (1997 - 2016)

Company Filing History:

Hitachi Maxell, Limited

patents

Years Active: 1995-2016

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Areas of Expertise:

Audio-Visual Devices

Electronic Device System

Data Recording Method

Information Recording Medium

Camera Information Recording

Schedule Management System

Realtime Data Recording

Icon Menu Display

Motion-Picture Voice Recording

Resource Management

Bus Usage Reservation

Erroneous Input Processing

28 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9240897 - Method of using AV devices and AV device system (2016-01-19),

2. 8326129 - Method of using AV devices and AV device system (2012-12-04),

3. 7577417 - Mobile terminal (2009-08-18),

4. 7333717 - Method of using AV devices and AV device system (2008-02-19),

5. 7224886 - Method of using AV devices and AV device system (2007-05-29),

6. 7136910 - Information device, information device system control method, and information device system (2006-11-14),

7. 7133599 - Realtime data recording method (2006-11-07),

8. 7003606 - Electronic device, method for using electronic device, and electronic device system for reserving bus usage time on a bus to conduct communications between electronic devices (2006-02-21),

9. 6856254 - Electronic device, electronic device system control method and electronic device system (2005-02-15),

10. 6788346 - Camera information recording apparatus for recording image data in an optical disk wherein managing information is stored when the residual storage of a battery decreases (2004-09-07),

11. 6757765 - Electronic device, method for using electronic device, and electronic device system for reserving bus usage time on a bus to conduct communications between electronic devices (2004-06-29),

12. 6728765 - Information device, information device system control method, and information device system (2004-04-27),

13. 6697563 - Information recording medium, motion-picture voice recording/reproducing apparatus, and motion-picture voice recording/reproducing method (2004-02-24),

14. 6691150 - Information device, information device system control method, and information device system (2004-02-10),

15. 6633724 - Realtime data recording method (2003-10-14),

Title: Innovations by Tsukasa Hasegawa: A Pioneer in AV Technology

Introduction: Tsukasa Hasegawa, an accomplished inventor based in Hiratsuka, Japan, has made significant contributions to the field of audio-visual (AV) technology. With a remarkable portfolio of 28 patents, Hasegawa has established himself as a leading figure in the innovative development of AV devices and systems.

Latest Patents: Among his latest innovations, Hasegawa introduced a method of using AV devices that encompasses a plurality of devices operating within a unique AV device system. This system integrates multiple input devices that generate an input AV signal, a related device that records and reproduces this signal, and a display device that showcases the AV content. Each component is interconnected to form a cohesive AV system featuring a bus for the transmission and reception of both AV signals and management information. Notably, the related device includes a recording medium, allowing input devices to communicate requests for securing a recording area on this medium.

Career Highlights: Tsukasa Hasegawa's career includes significant tenures at prominent companies such as Hitachi, Ltd. and Hitachi Maxell, Limited. His experiences at these organizations have provided a strong foundation for his innovative contributions to the AV sector. Hasegawa's patents reflect his commitment to enhancing the functionality and interconnectivity of AV systems, showcasing his forward-thinking approach in technology.

Collaborations: Throughout his career, Hasegawa has had the privilege of working alongside talented colleagues including Tamotsu Ito and Chiyo Akamatsu. These collaborations have not only fostered innovation but have also encouraged a culture of creativity and exploration within the field of AV technology.

Conclusion: Tsukasa Hasegawa's innovative work and contributions to the AV industry have positioned him as a notable inventor with a wealth of patents to his name. His focus on integrating devices to create advanced AV systems continues to inspire future innovations and set new standards in technology. As the industry evolves, the legacy of Hasegawa's inventions will undoubtedly play a crucial role in shaping the future of audio-visual experiences.

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]