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For the Inventor, By the Inventor

Kanagawa, Japan

Kazuhiko Hirokawa

USPTO Granted Patents = 15 

Average Co-Inventor Count = 5.8

ph-index = 3

Forward Citations = 16(Granted Patents)


Location History:

  • Ashigarakami-gun, JP (2011 - 2013)
  • Kanagawa, JP (2010 - 2019)
  • Ebina, JP (2014 - 2019)

Company Filing History:

goldMedal15 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents

Years Active: 2010-2019

where 'Filed Patents' based on already Granted Patents

15 patents (USPTO):
1. 10494535 - Near-infrared absorbent dispersion, aqueous ink for ink jet recording, and aqueous ink set for ink jet recording (2019-12-03),
2. 10407585 - Aqueous ink for ink jet recording, aqueous ink set for ink jet recording, and ink jet recording method (2019-09-10),
3. 9782976 - Liquid supply device and droplet ejecting apparatus (2017-10-10),
4. 9550902 - Aqueous ink, ink cartridge, ink drying system, ink drying method, recording apparatus, and recording method (2017-01-24),
5. 8676098 - Developing device and image forming apparatus (2014-03-18),
6. 8343701 - Image forming material (2013-01-01),
7. 8268523 - Black color material and toner (2012-09-18),
8. 8120819 - Image processing device and image forming device for generating corrected image data for a source image according to absorption wavelength characteristics of invisible coloring material (2012-02-21),
9. 8017291 - Image-forming material (2011-09-13),
10. 8007975 - Colorant and toner (2011-08-30),
11. 7985291 - Perimidine-substituted squarylium dye, dispersion medium, detection medium and image forming material (2011-07-26),
12. 7951960 - Black color material and toner (2011-05-31),
13. 7910733 - Image-forming material (2011-03-22),
14. 7679807 - Display medium, display device and display method (2010-03-16),
15. 7667047 - Colorant (2010-02-23),

Title: Inventor Kazuhiko Hirokawa: Innovating Ink Technology in Kanagawa

Introduction

Kazuhiko Hirokawa, an accomplished inventor based in Kanagawa, Japan, has made significant contributions to the field of ink technology. With a total of 15 patents to his name, Hirokawa's work focuses on innovative solutions for ink jet recording applications.

Latest Patents

Among Hirokawa's most recent patents are several cutting-edge inventions, including a near-infrared absorbent dispersion, aqueous ink for ink jet recording, and an aqueous ink set for ink jet recording. The near-infrared absorbent dispersion incorporates water, a near-infrared absorbent, and a resin dispersant, with specific weight ratios for optimal performance. The aqueous ink for ink jet recording is designed to include not only water and a water-soluble organic solvent but also a coloring material and a specific compound defined by a unique chemical formula. This creates an effective ink blend suitable for diverse recording applications, with a pH range carefully maintained between 6.5 and 8.5.

Career Highlights

Hirokawa's career has flourished at Fuji Xerox Co., Ltd., where he has been instrumental in advancing ink technology. His inventive genius is reflected in the patents he holds, which showcase innovative methodologies and compositions integral to modern inkjet printing.

Collaborations

In his professional journey, Hirokawa has collaborated with esteemed colleagues such as Minquan Tian and Yuka Ito. Together, they have worked towards enhancing advancements in printing technologies, pooling their unique expertise to create products that push the boundaries of what is possible in ink formulation.

Conclusion

Kazuhiko Hirokawa stands out as a pivotal figure in the ink technology sector, with his innovations contributing to significant improvements in ink jet recording methods. His patents not only reflect his technical prowess but also pave the way for future advancements within the industry, solidifying his legacy as a leading inventor in Kanagawa, Japan.

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