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Ryuji Sakaguchi

This inventor holds 12 USPTO granted patents and 6 published patent applications. Top assignees: Showa Denko K.k., Showa Denko Kabushiki Kaisha, Tohoku University. Active years: 1997-2015.

USPTO Granted Patents = 12 (Patent Applications = 6)

% Patents Active = 66.7

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 54(Granted Patents)

Location History:

Oita, JP (1997)
Ichihara, JP (2001 - 2013)
Chiba, JP (2003 - 2015)

Company Filing History:

Showa Denko Kabushiki Kaisha

where one patent can have more than one assignee

Years Active: 1997-2015

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9156128 - Burnishing method and burnishing apparatus (2015-10-13),

2. 8968484 - Lifting and drying device and method of manufacturing magnetic recording medium substrate or magnetic recording medium using the same (2015-03-03),

3. 8512100 - Abrasive tape, method for producing abrasive tape, and varnishing process (2013-08-20),

4. 8398870 - Method for manufacturing perpendicular magnetic recording medium (2013-03-19),

5. 8012613 - Magnetic recording medium, process for producing same, and magnetic recording reproducing apparatus (2011-09-06),

6. 7220447 - Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus (2007-05-22),

7. 6844046 - Magnetic recording medium, production process thereof, magnetic recording and reproducing apparatus, and sputtering target (2005-01-18),

8. 6821653 - Magnetic recording medium, process for producing the same, and magnetic recording and reproducing apparatus (2004-11-23),

9. 6582758 - Process of producing a magnetic recording medium (2003-06-24),

10. 6468602 - Method of manufacturing a magnetic recording medium (2002-10-22),

11. 6316062 - Magnetic recording medium and method of producing the same (2001-11-13),

12. 5684099 - Propylene block copolymer, process for producing the same, and resin (1997-11-04),

Title: Ryuji Sakaguchi: Innovator in Magnetic Recording Technology

Introduction

Ryuji Sakaguchi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of magnetic recording technology, holding a total of 12 patents. His innovative approaches have advanced the efficiency and effectiveness of magnetic disk manufacturing processes.

Latest Patents

One of Sakaguchi's latest patents is a burnishing method and apparatus designed to enhance the smoothness of magnetic disk surfaces. This method aims to reduce the flying height of magnetic heads while minimizing contamination from abrasive grains. The process involves an alignment step that ensures the surfaces of the magnetic disk and an outer peripheral plate are flush, optimizing the burnishing process. Another notable patent is a lifting and drying device for manufacturing magnetic recording medium substrates. This device facilitates the cleaning of disk-like substrates by immersing them in a cleaning liquid and includes mechanisms for elevating and drying the substrates efficiently.

Career Highlights

Throughout his career, Ryuji Sakaguchi has worked with notable companies such as Showa Denko K.K. and Showa Denko Kabushiki Kaisha. His work in these organizations has been instrumental in developing advanced technologies in the magnetic recording sector.

Collaborations

Sakaguchi has collaborated with several professionals in his field, including Hiroshi Sakai and Mikio Suzuki. These partnerships have contributed to the innovation and refinement of his patented technologies.

Conclusion

Ryuji Sakaguchi's contributions to magnetic recording technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in the field, ensuring improved performance and reliability in magnetic recording mediums.

Profile summary based on public USPTO records.

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