This inventor holds 163 USPTO granted patents and 12 published patent applications and 8 EPO patents, primarily in Piezoelectric Technology (CPC class G11B2-3107). Top assignees: Fuji Photo Film Company, Limited, Fujifilm Corporation. Active years: 1999-2026.
Inventors with similar research interests:
Location History:
- Kanagawa-ken, JP (2006)
- Odawara, JP (2009 - 2015)
- Kanagawa, JP (1999 - 2016)
- Minamiashigara, JP (2024)
Company Filing History:
109 out of 16,458 
54 out of 16,916 
Years Active: 1999-2026
Areas of Expertise:
Title: Kazuo Hiraguchi: A Pioneer in Recording Tape Cartridge Innovations
Introduction:
Kazuo Hiraguchi is a renowned inventor based in Kanagawa, Japan. With an impressive portfolio of 159 patents, he has made significant contributions to the field of recording tape cartridges. This article explores some of his latest patents, highlights his career achievements, and discusses his collaborations with notable colleagues.
Latest Patents:
Among Kazuo Hiraguchi's recent patents is his invention of a recording tape cartridge with a unique brake member. This cartridge features a reel with an engagement portion on the bottom of the reel hub, a resin brake member that moves towards and away from the reel hub, and a resin release member that rotates along with the reel. Notably, this innovative design allows for selective rotation locking and rotation permitting positions, enhancing the usability of the recording tape cartridge.
Another one of his inventions is a recording tape cartridge specifically designed to minimize position error signals during tape running. This cartridge includes a reel hub, magnetic tape wound around the reel hub, and lower and upper flanges at each axial direction end. By offsetting the magnetic tape towards the upper flange when fully wound, Kazuo Hiraguchi has successfully reduced position errors. Additionally, by widening the facing distance between the lower and upper flanges towards the outer periphery side, he has improved the overall performance of the tape cartridge.
Career Highlights:
Kazuo Hiraguchi's remarkable career showcases his expertise in the field of recording tape cartridges. He has worked with prestigious companies, including Fuji Photo Film Company, Limited and Fujifilm Corporation. His tenure at these organizations has allowed him to contribute significantly to the development of innovative recording technologies.
Collaborations:
Throughout his career, Kazuo Hiraguchi has had the privilege of collaborating with accomplished colleagues. Notable individuals he has worked with include Shozo Onmori and Kiyoo Morita. These collaborations have fostered an environment of shared knowledge and expertise, leading to pioneering advancements in recording tape cartridge technologies.
Conclusion:
Kazuo Hiraguchi's extensive patent portfolio and remarkable contributions to the field of recording tape cartridges make him a respected innovator in his field. His latest inventions, such as the recording tape cartridges with unique brake members and position error reduction mechanisms, demonstrate his commitment to pushing the boundaries of innovation. Through his collaborations and career achievements, Hiraguchi has left an indelible mark on the industry. His work continues to inspire future generations of inventors and contributes to advancements in recording technology.