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Kasei Optonix, Ltd.

USPTO Granted Patents = 87

% Expired Patents = 2.3

Forward Citations = 1,069

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132 inventors (with patents filed for the assignee):

Takashi Hase (14 out of 28 patents)

Norio Miura (13 out of 18 patents)

Hideo Tono (10 out of 10 patents)

4. Etsuo Shimizu (10 out of 11 patents)

5. Yujiro Suzuki (9 out of 13 patents)

6. Noboru Kotera (8 out of 15 patents)

7. Keiji Shimiya (8 out of 12 patents)

8. Shusaku Eguchi (7 out of 11 patents)

9. Takayuki Hisamune (6 out of 7 patents)

10. Yuji Aoki (6 out of 8 patents)

11. Hideo Suzuki (5 out of 5 patents)

12. Kunihiko Yoneshima (5 out of 5 patents)

13. Tomohiro Miyazaki (5 out of 5 patents)

14. Shigeo Fujino (5 out of 6 patents)

15. Kazuhito Iwasaki (5 out of 9 patents)

Core Competencies:

Alkaline Earth Phosphor

Rare Earth Oxysulfide

Fluorescent Lamp

Radiographic Screen

Phosphor Composition

Electron Excited Display

Luminescent Materials

Phosphor Production Process

Cathode Ray Tube

Color Television

Long Persistent Phosphorescence

87 patents: Sort by Forward Citations

1. 7492083 - Alkaline earth aluminate phosphor for a cold cathode fluorescent lamp and cold cathode fluorescent lamp (2009-02-17),

2. 7282849 - Alkaline earth aluminate phosphor, phosphor paste composition and vacuum ultraviolet excitation light emitting element (2007-10-16),

3. 7001537 - Phosphor and its production process (2006-02-21),

4. 6899825 - Bivalent metal silicate phosphor and process for its production, and a phosphor paste composition and a vacuum ultraviolet ray excitation type light-emitting device employing such a phosphor (2005-05-31),

5. 6676854 - Gadorinium oxysulfide phosphor for digital radiography, radiographic image conversion screen and radiograph-forming device (2004-01-13),

6. 6627114 - Rare earth oxide type phosphor for vacuum ultraviolet ray excitation, phosphor paste composition and vacuum ultraviolet ray excitation type light-emitting device (2003-09-30),

7. 6627113 - Phosphor consisting of hollow particles, phosphor slurry, phosphor beads for analysis using tracer technique and their production processes (2003-09-30),

8. 6597104 - Lanthanum phosphate phosphor for vacuum ultraviolet radiation, and rare gas discharge lamp (2003-07-22),

9. 6585912 - Aluminate phosphor and process for its production, phosphor paste composition, and vacuum ultraviolet ray excitation type light-emitting device (2003-07-01),

10. 6143200 - Rare earth oxysulfide phosphor and X-ray detector using the same (2000-11-07),

11. 6116866 - Reed valve for a pump (2000-09-12),

12. 6091183 - Piezoelectric element and method for driving the same (2000-07-18),

13. 6020067 - Phosphor having surface coated with a quaternary salt-containing compound (2000-02-01),

14. 5989455 - Aluminate phosphor, process for preparing the same, and vacuum (1999-11-23),

15. 5951915 - Phosphorescent phosphor (1999-09-14),

Company Overview

Kasei Optonix, Ltd., headquartered in Tokyo, Japan, specializes in phosphor technology, focusing on the development and production of advanced luminescent materials. The company is recognized for its expertise in alkaline earth phosphors and rare earth oxysulfides, which are integral to various applications including fluorescent lamps and radiographic screens. Kasei Optonix is committed to innovation in phosphor composition and production processes, contributing significantly to the fields of electron excited displays and other luminescent technologies.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

87 Patents

#594 in Tokyo

#1,229 in Japan

#8,776 in the World

Kasei Optonix, Ltd.

Forward Citations = 1,069

132 inventors:

Takashi Hase (14 out of 28 patents)

Norio Miura (13 out of 18 patents)

Hideo Tono (10 out of 10 patents)

4. Etsuo Shimizu (10 out of 11 patents)

5. Yujiro Suzuki (9 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kasei Optonix, Ltd.. Retrieved from https://idiyas.com/company/kasei-optonix

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

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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