logo

For the Inventor, By the Inventor

Tokyo, Japan

Kazuo Tachiwana

This inventor holds 15 USPTO granted patents and 4 published patent applications and 2 EPO patents. Top assignee: Hoya Corporation. Active years: 1991-2017.

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

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

USPTO Granted Patents = 15 

% Patents Active = 66.7

 

Average Co-Inventor Count = 2.2

ph-index = 7

Forward Citations = 190(Granted Patents)


Location History:

  • Akishima, JP (1991)
  • Hamura, JP (2000 - 2013)
  • Shinjuku-ku, JP (2011 - 2014)
  • Tokyo, JP (1997 - 2017)

Company Filing History:

goldMedal15 out of 2,566 
 
Hoya Corporation
 patents

Years Active: 1991-2017

Loading Chart...
Loading Chart...
15 patents (USPTO):Explore Patents
1. 9718723 - Glass article (2017-08-01),
2. 9663402 - Method for manufacturing optical element (2017-05-30),
3. 9236077 - Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods (2016-01-12),
4. 8785011 - Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods (2014-07-22),
5. 8656734 - Material for information recording medium substrate, information recording medium substrate, information recording medium, and method for manufacturing them (2014-02-25),
6. 8479539 - Optical glass, glass material for press molding, optical element, and method of manufacturing same (2013-07-09),
7. 8357459 - Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method (2013-01-22),
8. 8077406 - On-vehicle camera lens glass material and on-vehicle camera lens (2011-12-13),
9. 8076014 - Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method (2011-12-13),
10. 7501369 - Optical glass and process for the production of optical products (2009-03-10),
11. 7015164 - Optical glass, glass material for press molding, optical element, and method of manufacturing same (2006-03-21),
12. 6156684 - Light polarization control element using stress-optical coefficient (2000-12-05),
13. 5972460 - Information recording medium (1999-10-26),
14. 5668066 - Near infrared absorption filter glass (1997-09-16),
15. 4996173 - Optical glass (1991-02-26),

Title: Kazuo Tachiwana: Innovator in Glass Technology

Introduction

Kazuo Tachiwana is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of glass technology, holding a total of 15 patents. His innovative work has advanced the manufacturing and application of optical elements and glass articles.

Latest Patents

Among his latest patents is a unique glass article that incorporates phosphorus (P), aluminum (Al), an alkali earth metal, fluorine (F), and oxygen (O). This glass article is designed such that the content of P and O is greater at the surface than in the inner layers, while the content of the alkali earth metal and F is reduced at the surface compared to the inner side. Another notable patent is a method for manufacturing optical elements from glass after polishing. This method involves using a cleaning liquid that inhibits the expansion of cracked parts on the glass surface post-polishing.

Career Highlights

Kazuo Tachiwana is currently employed at Hoya Corporation, a leading company in the optical and glass industry. His work at Hoya has allowed him to push the boundaries of glass technology and develop innovative solutions for various applications.

Collaborations

Throughout his career, Tachiwana has collaborated with talented individuals such as Yoichi Hachitani and Xuelu Zou. These collaborations have fostered a creative environment that has led to groundbreaking advancements in glass technology.

Conclusion

Kazuo Tachiwana's contributions to glass technology through his patents and work at Hoya Corporation highlight his role as a key innovator in the field. His advancements continue to influence 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]
Loading…