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For the Inventor, By the Inventor

Tokyo, Japan

Katsumi Maekawa

This inventor holds 13 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1995-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumi Maekawa. Retrieved from https://idiyas.com/inventor/katsumi-maekawa

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

USPTO Granted Patents = 13

% Patents Active = 53.8

Average Co-Inventor Count = 4.4

ph-index = 5

Forward Citations = 176(Granted Patents)


Company Filing History:

goldMedal13 out of 58,147 
 
Sony Corporation
 patents

Years Active: 1995-2013

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13 patents (USPTO):Explore Patents
1. 8564907 - Position determining member to align a magnetic tape cartridge in a magnetic recording and reproducing apparatus (2013-10-22),
2. 7252257 - Tape drive apparatus, tape extraction apparatus and tape cassette (2007-08-07),
3. 6991193 - Tape drive device, tape extraction device and tape cassette (2006-01-31),
4. 6869036 - Recording and/or reproducing apparatus (2005-03-22),
5. 6865047 - Single reel tape cartridge and recording and reproducing device using the tape cartridge (2005-03-08),
6. 6762903 - Tape drive (2004-07-13),
7. 6611394 - Recording medium, tape drive, and method for identifying type of recording medium (2003-08-26),
8. D474472 - Information recording medium (2003-05-14),
9. 6160679 - Recording medium device for use with a tape cartridge having an (2000-12-12),
10. 5992784 - Lid assembly for tape cartridge (1999-11-30),
11. 5791578 - Recording medium device with memory terminals and shutter sized and (1998-08-11),
12. 5712744 - Magnetic tape loading device (1998-01-27),
13. 5448537 - Magnet-optical disc drive device with sure disc placement (1995-09-05),

Title: Innovations of Katsumi Maekawa: A Pioneer in Magnetic Tape Technology

Introduction

Katsumi Maekawa is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of magnetic tape technology. With a remarkable portfolio of 13 patents, he has paved the way for advancements in recording and reproducing apparatus, showcasing his innovative spirit and technical expertise.

Latest Patents

Maekawa's recent patents include a groundbreaking design for a position determining member that aligns a magnetic tape cartridge in a magnetic recording and reproducing apparatus. This invention involves a cartridge case, two cylindrical hubs, and a magnetic tape wound between them. Each hub features a height-position determining member that precisely positions the hub by contacting a driving shaft, ensuring efficient functionality within the apparatus.

Additionally, he has developed a comprehensive design for a tape drive apparatus, tape extraction apparatus, and tape cartridge that enable reliable chucking and release processes. This invention encompasses a magnetic recording/reproducing apparatus with a sophisticated cartridge mount mechanism, takeup reel, leader block, and an advanced chucking mechanism and carrying system, all designed for stable and efficient operation.

Career Highlights

Katsumi Maekawa's impressive career is marked by his tenure at Sony Corporation, where he has made remarkable strides in the field of magnetic tape technology. His work not only showcases his technical abilities but also reflects the company's commitment to innovation and excellence within the consumer electronics industry.

Collaborations

During his career, Maekawa collaborated with esteemed colleagues, including Yasuaki Kano and Toshiya Kurokawa. Together, they have contributed to various projects that have undoubtedly enhanced the realm of magnetic tape technology, driving forward the capabilities of their inventions and promoting advancement within Sony Corporation.

Conclusion

Katsumi Maekawa stands as a testament to the spirit of innovation in the technology industry. Through his patented inventions and collaborations, he has significantly impacted the development of magnetic recording and reproducing systems. As technology continues to evolve, Maekawa's contributions will undoubtedly remain influential, paving the way for future advancements in the field.

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]
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