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For the Inventor, By the Inventor

Kanagawa, Japan

Kazuo Shiiki

This inventor holds 38 USPTO granted patents, primarily in Magnetic Head Technology. Top assignees: Hitachi, Ltd., Hitachi Maxell, Limited, Hitachi Metals, Ltd.. Active years: 1981-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Shiiki. Retrieved from https://idiyas.com/inventor/kazuo-shiiki

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

USPTO Granted Patents = 38

% Patents Active = 81.6

Average Co-Inventor Count = 7.6

ph-index = 15

Forward Citations = 522(Granted Patents)


Location History:

  • Shiroyamamachi, JP (1983)
  • Tsukui, JP (1985 - 1995)
  • Kanagawa, JP (1981 - 2000)
  • Kanagawa-ken, JP (1998 - 2007)

Company Filing History:

goldMedal36 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal3 out of 1,112 
 
Hitachi Maxell, Limited
 patents
bronzeMedal3 out of 2,333 
 
Hitachi Metals, Ltd.
 patents
4. 2 out of 256 
 
Research Development Corporation of Japan
 patents
5. 1 out of 52 
 
Hitachi Global Storage Technologies
 patents
6. 1 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
7. 1 out of 1 
 
Hitachi Research Dev. Corp.
 patent
where one patent can have more than one assignee

Years Active: 1981-2007

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Areas of Expertise:
Magnetic Head
Perpendicular Recording
Multilayered Reproducing Element
Tunneling Effect
Thin Film
Magnetoresistance
High Density Recording
Focused Ion Beam Etching
Magnetic Disk Drive
Ferromagnetic Material
Amorphous Alloy
Magnetic Recording Medium
38 patents (USPTO):Explore Patents
1. 7159303 - Method for manufacturing magnetic head device (2007-01-09),
2. 7054120 - Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect (2006-05-30),
3. 6839200 - Combination perpendicular magnetic head having shield material formed at both ends of an upper pole of a write element (2005-01-04),
4. 6687099 - Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference (2004-02-03),
5. 6665141 - Magnetic head having track width defined by trench portions filled with magnetic shield material (2003-12-16),
6. 6538844 - Method of fabricating a magnetic head by focused ion beam etching (2003-03-25),
7. 6483677 - Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect (2002-11-19),
8. 6307707 - Narrow track thin film head including magnetic poles machined by focused ion beam etching (2001-10-23),
9. 6278593 - Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect (2001-08-21),
10. 6278578 - Narrow track thin film head having a focused ion beam etched air bearing surface (2001-08-21),
11. 6111723 - Narrow track thin film magnetic head suitable for high density recording (2000-08-29),
12. 6011674 - Magnetoresistance effect multilayer film with ferromagnetic film (2000-01-04),
13. 5850326 - Narrow track thin film magnetic head suitable for high density recording (1998-12-15),
14. 5726837 - Multilayer magnetoresistance effect-type magnetic head (1998-03-10),
15. 5719729 - Magnetic head and recording and reproducing apparatus having an (1998-02-17),

Title: Kazuo Shiiki - Pioneering Inventor from Kanagawa-ken, JP

Introduction: Kazuo Shiiki is a renowned inventor hailing from Kanagawa-ken, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Kazuo Shiiki holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over three decades, Kazuo Shiiki has worked with leading tech companies and research institutions, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Kazuo Shiiki has collaborated with top engineers, scientists, and researchers from around the world, fostering a culture of innovation and knowledge-sharing that has led to numerous successful projects and inventions.

Conclusion: Kazuo Shiiki's passion for innovation, coupled with his relentless drive to solve complex challenges, has solidified his reputation as a visionary inventor in the global tech community. His contributions continue to inspire future generations of inventors and shape the landscape of technological progress.

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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