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For the Inventor, By the Inventor

Odawara, Japan

Masao Iwakura

This inventor holds 17 USPTO granted patents and 1 EPO patent, primarily in Magnetic Recording Technology. Top assignees: Hitachi, Ltd., Hitachi Video Engineering, Incorporated, Hitachi Engineering Ltd. Active years: 1991-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Iwakura. Retrieved from https://idiyas.com/inventor/masao-iwakura

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 64.7


Average Co-Inventor Count = 6.2

ph-index = 8

Forward Citations = 169(Granted Patents)


Location History:

  • Katsuta, JP (1991 - 1992)
  • Fujisawa, JP (1994)
  • Kanagawa, JP (1994 - 2010)
  • Odawara, JP (1996 - 2011)

Company Filing History:

goldMedal15 out of 42,752 
 
Hitachi, Ltd.
 patents
silverMedal3 out of 67 
 
Hitachi Video Engineering, Incorporated
 patents
bronzeMedal1 out of 7 
 
Hitachi Engineering Ltd
 patents
4. 1 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
5. 1 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
where one patent can have more than one assignee

Years Active: 1991-2011

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Areas of Expertise:
Magnetic Disk
Noise Control
Air Flow Mechanism
Tape Loading Device
Information Recording
Magnetic Apparatus
Shroud Design
Capstan Arrangement
Deformation Prevention
3.5 Inch Form Factor
Rotary Head Device
Magnetic Conversion
17 patents (USPTO):Explore Patents
1. 7925028 - Electronic device having a blower with noise control (2011-04-12),
2. 7733599 - Structure to prevent deformation of magnetic disk device housing (2010-06-08),
3. 7330334 - Magnetic disk apparatus with shroud and having open space downstream of moveable arms in communication with bypass channel (2008-02-12),
4. 6898049 - Magnetic disk apparatus with air flow bypass channel (2005-05-24),
5. 6728074 - Method and apparatus for information recording and reproducing using an air force latch mechanism (2004-04-27),
6. 6717774 - Information recording and reproducing apparatus with an air force latch mechanism (2004-04-06),
7. 6665139 - Magnetic-disc unit with gap between disc and shroud (2003-12-16),
8. 6600626 - Magnetic disk apparatus (2003-07-29),
9. 6490123 - Disc drive having 3.5 inch form factor housing and 2.5 inch form factor disk media (2002-12-03),
10. 6369978 - Magnetic disk apparatus with shroud having opening downstream of moveable arm (2002-04-09),
11. 5720442 - Capstanless tape driving method and information recording and (1998-02-24),
12. 5537266 - Tape loading device and magnetic conversion apparatus (1996-07-16),
13. 5315460 - Magnetic recording and reproducing apparatus including S fixed chassis (1994-05-24),
14. 5278707 - Tape loading mechanism for magnetic recording and/or reproducing (1994-01-11),
15. 5124854 - Cassette loading apparatus having an inner cassette holder supported on (1992-06-23),

Title: The Innovative Journey of Masao Iwakura

Introduction: Masao Iwakura is a renowned inventor hailing from Odawara, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Masao Iwakura holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to innovation.

Career Highlights: With a career spanning over three decades, Masao Iwakura has worked with leading research institutions and tech companies, developing cutting-edge solutions that have revolutionized industries worldwide.

Collaborations: Throughout his career, Masao Iwakura has collaborated with top engineers, scientists, and inventors, fostering a culture of creativity and excellence in all his projects.

Conclusion: Masao Iwakura's passion for innovation and his relentless pursuit of technological advancement have solidified his reputation as a visionary inventor in the global innovation landscape.

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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