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For the Inventor, By the Inventor

Hitachi, Japan

Seiji Tai

USPTO Granted Patents = 41

Average Co-Inventor Count = 4.7

ph-index = 8

Forward Citations = 210(Granted Patents)


Location History:

  • Palo Alto, CA (US) (1991 - 1996)
  • Tokyo, JP (2009 - 2010)
  • Hitachi, JP (1988 - 2012)

Company Filing History:

goldMedal39 out of 1,641 
 
Hitachi Chemical Company, Ltd.
 patents
silverMedal7 out of 42,485 
 
Hitachi, Ltd.
 patents
bronzeMedal2 out of 36 
 
Maxdem Incorporated
 patents
4. 1 out of 1 
 
Sumation Co., Ltd.
 patent
5. 1 out of 3 
 
Hitachi Chemical Company, Co.
 patents
where one patent can have more than one assignee

Years Active: 1988-2012

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41 patents (USPTO):
1. 8242235 - Purification process of electroluminescent material, electroluminescent material and electroluminescent device (2012-08-14),
2. 7714099 - Luminescent compositions and their uses (2010-05-11),
3. 7507351 - Method for purifying electroluminescent material, electroluminescent material and electroluminescent device (2009-03-24),
4. 6416931 - Photosensitive element for preparing a phosphor pattern (2002-07-09),
5. 6391504 - PROCESS FOR PREPARING PHOSPHOR PATTERN FOR FIELD EMISSION DISPLAY PANEL, PHOTOSENSITIVE ELEMENT FOR FIELD EMISSION DISPLAY PANEL, PHOSPHOR PATTERN FOR FIELD EMISSION DISPLAY PANEL AND FIELD DISPLAY PANEL (2002-05-21),
6. 6358663 - FLUORESCENT PATTERN, PROCESS FOR PREPARING THE SAME, ORGANIC ALKALI DEVELOPING SOLUTION FOR FORMING THE SAME, EMULSION DEVELOPING SOLUTION FOR FORMING THE SAME AND BACK PLATE FOR PLASMA DISPLAY USING THE SAME (2002-03-19),
7. 6329111 - Phosphor pattern, processes for preparing the same and photosensitive element to be used for the same (2001-12-11),
8. 6248501 - Photosensitive resin composition, photosensitive film and process for preparing fluorescent pattern using the same (2001-06-19),
9. 6232024 - Fluorescent pattern, process for preparing the same, organic alkali developing solution for forming the same, emulsion developing solution for forming the same and back plate for plasma display using the same (2001-05-15),
10. 6194826 - Process for preparing phosphor pattern, phosphor pattern prepared the same and back plate for plasma display panel (2001-02-27),
11. 6077647 - Photosensitive resin composition, photosensitive film and process for (2000-06-20),
12. 5858616 - Photosensitive resin composition, photosensitive film and process for (1999-01-12),
13. 5773508 - Coating varnish composition and antifouling coating composition (1998-06-30),
14. 5665875 - Water-soluble tetraazaporphins and fluorochrome for labeling (1997-09-09),
15. 5648135 - Information recording medium having recording layer with organic polymer (1997-07-15),

Certainly! Here is an article about inventor Seiji Tai:

Title: Spotlight on Inventor Seiji Tai: Pioneer in Electroluminescent Innovation

Introduction: Seiji Tai, a distinguished inventor based in Hitachi, Japan, has made significant contributions to the field of electroluminescent technology. With a remarkable portfolio of 41 patents, Seiji Tai has been at the forefront of developing innovative solutions in the purification and optimization of electroluminescent materials.

Latest Patents:

1. Purification process of electroluminescent material: Seiji Tai's groundbreaking purification process focuses on effectively removing impurities like Pd and P, thus enhancing the quality of electroluminescent materials. This process involves treating the material with an oxidizing agent and a column to achieve the desired purification levels.

2. Luminescent compositions and their uses: Tai's inventions include high quantum yield luminescent monomers, oligomers, and polymers containing benzotriazole repeating units. These compositions have been instrumental in advancing optical devices such as electroluminescent devices, OLEDs, sensors, and more.

Career Highlights: Seiji Tai has had a prolific career, with notable stints at renowned companies such as Hitachi Chemical Company, Ltd., and Hitachi, Ltd. His expertise and innovative approach have helped these organizations stay at the forefront of technological advancements in the field of electroluminescence.

Collaborations: Throughout his career, Seiji Tai has collaborated with esteemed professionals in the industry, including Hiroyuki Tanaka and Koichi Kamijima. Together, they have pushed the boundaries of electroluminescent technology and brought forth novel solutions to complex challenges in the field.

Conclusion: In conclusion, Seiji Tai stands as a visionary inventor whose work has significantly impacted the realm of electroluminescent materials and devices. His dedication to innovation and commitment to excellence continue to inspire future generations of inventors and researchers in the field.

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