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For the Inventor, By the Inventor

Chiba, Japan

Kazuo Sanada

This inventor holds 12 USPTO granted patents and 1 EPO patent. Top assignees: Fujikura Limited, Doryokuro Kakunenryo Kaihatsu Jigyodan, Nippon Telegraph and Telephone Public Corporation. Active years: 1982-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Sanada. Retrieved from https://idiyas.com/inventor/kazuo-sanada-30qghh95

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

Calculating rank
USPTO Granted Patents = 12

% Patents Active = 100.0


Average Co-Inventor Count = 4.2

ph-index = 8

Forward Citations = 337(Granted Patents)


Location History:

  • Kobe, JP (1982)
  • Chiba, JP (1982 - 2015)

Company Filing History:

goldMedal9 out of 1,875 
 
Fujikura Limited
 patents
silverMedal3 out of 196 
 
Doryokuro Kakunenryo Kaihatsu Jigyodan
 patents
bronzeMedal3 out of 522 
 
Nippon Telegraph and Telephone Public Corporation
 patents
4. 2 out of 864 
 
Kansai Paint Company, Ltd.
 patents
5. 2 out of 9 
 
Matsuo Sangyo Co., Ltd.
 patents
6. 2 out of 32 
 
The Fujikura Cable Works Limited
 patents
7. 1 out of 322 
 
Japan Atomic Energy Institute
 patents
8. 1 out of 53,286 
 
Kabushiki Kaisha Toshiba
 patents
9. 1 out of 576 
 
National Institute for Materials Science
 patents
where one patent can have more than one assignee

Years Active: 1982-2015

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12 patents (USPTO):Explore Patents
1. 9051662 - Single crystal, production process of same, optical isolator, and optical processor using same (2015-06-09),
2. 5686725 - Method for reading of invisible marking (1997-11-11),
3. 5547501 - Method for formation of invisible marking and method for reading of (1996-08-20),
4. 5269825 - Method of manufacturing radiation-resistant optical fiber (1993-12-14),
5. 5048923 - Image fiber, image fiber preform, and manufacturing processes thereof (1991-09-17),
6. 4896941 - Image-transmitting fiber (1990-01-30),
7. 4770493 - Heat and radiation resistant optical fiber (1988-09-13),
8. 4707075 - Very-low-temperature fiberscope (1987-11-17),
9. 4679899 - Optical fiber (1987-07-14),
10. 4388098 - Apparatus for producing multi-component glass fiber preform (1983-06-14),
11. 4336049 - Method for producing multi-component glass fiber preform (1982-06-22),
12. 4330698 - Microwave melter (1982-05-18),

Title: Kazuo Sanada: Innovator in Optical Technologies

Introduction

Kazuo Sanada is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of optical technologies, holding a total of 12 patents. His work focuses on advancements in single crystal production and methods for reading invisible markings.

Latest Patents

Sanada's latest patents include a groundbreaking single crystal designed for optical isolators. This invention boasts a Faraday rotation angle that exceeds that of TGG single crystals in specific wavelength regions. The single crystal is primarily composed of terbium aluminum garnet, with a portion of aluminum replaced by lutetium. Additionally, he has developed a method for reading invisible markings, which involves printing information on a metal substrate using a specialized marking ink. This method allows for easy identification of information using a CCD camera sensitive to infrared rays.

Career Highlights

Throughout his career, Kazuo Sanada has worked with notable companies, including Fujikura Limited and Doryokuro Kakunenryo Kaihatsu Jigyodan. His innovative work has positioned him as a key figure in the development of optical technologies.

Collaborations

Sanada has collaborated with esteemed colleagues such as Sadao Chigira and Osamu Fukuda. Their combined expertise has contributed to the advancement of various optical technologies.

Conclusion

Kazuo Sanada's contributions to the field of optical technologies through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry and pave the way for future innovations.

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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