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For the Inventor, By the Inventor

Tokyo, Japan

Heigo Ishihara

USPTO Granted Patents = 20

Average Co-Inventor Count = 3.9

ph-index = 8

Forward Citations = 129(Granted Patents)


Location History:

  • Hachioji, JP (1980)
  • Kokubunji, JP (1980)
  • Nishitama, JP (1992)
  • Tokyo, JP (1987 - 1996)
  • Nishitama-gun, JP (1999)
  • Hinode-machi, JP (1998 - 2005)

Company Filing History:

goldMedal20 out of 42,496 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 1,112 
 
Hitachi Maxell, Limited
 patents
where one patent can have more than one assignee

Years Active: 1980-2005

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20 patents (USPTO):Explore Patents
1. 6869536 - Lubricant, magnetic disk and magnetic disk apparatus (2005-03-22),
2. 6555197 - Lubricant, magnetic disk and magnetic disk apparatus (2003-04-29),
3. 5958542 - Thin film magnetic disc and method of manufacturing the disc (1999-09-28),
4. 5820964 - Magnetic disk, and magnetic disk apparatus (1998-10-13),
5. 5543203 - Magnetic recording medium having a protective layer which includes high (1996-08-06),
6. 5498457 - Magnetic recording medium having a lubricant layer comprising ionically (1996-03-12),
7. 5180608 - Process for producing a rigid magnetic disk by longitudinally generating (1993-01-19),
8. 5093211 - Magnetic recording medium comprising a surface treatment layer provided (1992-03-03),
9. 5073460 - Magnetic recording medium and process for producing the same (1991-12-17),
10. 5034243 - Method for magnetic orientation of magnetic recording medium using (1991-07-23),
11. 5008128 - Process for producing information recording medium (1991-04-16),
12. 5000982 - Magnetic recording medium and method for producing the same (1991-03-19),
13. 4985295 - Magnetic recording medium and method for producing the same (1991-01-15),
14. 4966797 - Process for producing magnetic recording medium, magnetic paint, and (1990-10-30),
15. 4794035 - Magnetic recording medium (1988-12-27),

Title: The Innovative Mind of Heigo Ishihara

Introduction: Heigo Ishihara, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of technology with a total of 20 patents to his name. His innovative work primarily focuses on the development of advanced lubricants and magnetic disk technologies that enhance the performance and durability of electronic devices.

Latest Patents: Among his latest inventions, Ishihara has developed a lubricant that is resistant to splashing and exhibits improved slidableness. This lubricant is not only crucial for maintaining the integrity of magnetic disks but also for enhancing the performance of magnetic disk apparatuses. Specifically, the magnetic disk apparatuses designed by Ishihara feature a prolonged service life and excellent record reproduction properties. His formulations involve specific molecular weight components of perfluoropolyether to achieve optimal performance metrics. For instance, one of his innovative lubricant formulations contains a specific ratio of molecular weights, ensuring high efficiency and reliability.

Career Highlights: Heigo Ishihara has had a remarkable career, including tenures at notable companies such as Hitachi, Ltd. and Hitachi Maxell, Limited. His work in these leading firms has significantly shaped the landscape of magnetic disk technology and the materials used in high-speed applications. His patents reflect his commitment to enhancing everyday technology through meticulous research and development.

Collaborations: Throughout his career, Ishihara has collaborated with several talented individuals in the field, including coworkers Takanori Kudo and Hajime Fukke. These collaborations have fostered an environment of innovation and creativity, resulting in numerous advancements in the technology sector.

Conclusion: Heigo Ishihara's contributions to the field of lubricants and magnetic disk technology demonstrate his status as an influential inventor. With 20 patents to his credit and a robust collaboration history, Ishihara continues to impact the technological advancements within his industry. His innovative spirit and dedication to improving electronic components ensure a lasting legacy in the world of inventions.

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