Hiroyuki Fushimi

This inventor holds 39 USPTO granted patents and 1 published patent application, plus 2 CIPO patents and 9 EPO patents, primarily in Inkjet Technology. Top assignees: Ricoh Company, Ltd., Other. Active years: 1988-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Fushimi. Retrieved from https://idiyas.com/inventor/hiroyuki-fushimi

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

USPTO Granted Patents = 39 (Patent Applications = 1)

% Patents Active = 74.4

CIPO Patents = 2

EPO Patents = 9 (Patent Applications = 9)

Average Co-Inventor Count = 4.0

ph-index = 16

Forward Citations = 555(Granted Patents)

Location History:

Touma, JP (2000)
Shizuoka-ken, JP (1999 - 2005)
Numazu, JP (1988 - 2011)
Shizouka, JP (2015)
Shizuoka, JP (2000 - 2019)

Company Filing History:

39 out of 28,940

Ricoh Company, Ltd.

patents

1 out of 834,513

Other

patents

where one patent can have more than one assignee

Years Active: 1988-2019

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Areas of Expertise:

Inkjet Recording Device

Ink Cartridge

Image Forming Method

Pigment Dispersion Liquid

Electrostatic Toner

Colorant Dispersion

Electrophotography

Dry Toner

Cleaning Methods

Image Forming Apparatus

Toner Composition

Triboelectric Charge

39 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10414932 - Ink, ink container, and inkjet recording device (2019-09-17),

2. 9096770 - Inkjet recording ink set, ink cartridge, inkjet recording device, inkjet recording method, and image formed matter (2015-08-04),

3. 9056995 - Inkjet recording ink set and ink cartridge, and recording device, image forming method, and image-formed article using such ink set (2015-06-16),

4. 9045659 - Inkjet recording ink and inkjet recording device using the same (2015-06-02),

5. 8770735 - Inkjet recording ink and ink cartridge (2014-07-08),

6. 8765839 - Inkjet ink set, inkjet recording device, and inkjet recording method (2014-07-01),

7. 8646891 - Inkjet recording ink, inkjet recording ink set, and ink cartridge (2014-02-11),

8. 8636351 - Inkjet ink, ink cartridge containing the inkjet ink, inkjet recording apparatus using the inkjet cartridge, and print formed by the inkjet ink (2014-01-28),

9. 8613511 - Pigment dispersion liquid, inkjet ink, ink cartridge, image forming apparatus, recording method , and image formed matter (2013-12-24),

10. 8529048 - Inkjet ink, ink cartridge, image forming device, image forming method, and image formed matter (2013-09-10),

11. 8474963 - Inkjet recording ink and image forming method (2013-07-02),

12. 8247473 - Colorant dispersion of recording ink, and recording ink using the same (2012-08-21),

13. 8197049 - Inkjet recording ink, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matter (2012-06-12),

14. 8007976 - Electrostatic image developing toner, toner kit and image forming apparatus (2011-08-30),

15. 7939235 - Image formation method (2011-05-10),

Title: The Innovative Journey of Hiroyuki Fushimi: Pioneering Patents in Ink Technology

Introduction: Hiroyuki Fushimi, based in Shizuoka, Japan, stands out as a prolific inventor with an impressive portfolio of 39 patents. His contributions to the field of ink technology have significantly influenced various industries, especially in printing and imaging solutions.

Latest Patents: Fushimi's recent patents focus on advanced ink formulations and inkjet recording devices. One notable invention involves a unique ink that comprises water, a pigment, an organic solvent featuring glycol ether, and a silicone-based surfactant, accompanied by a salt of sulfo succinic acid dialkyl ester. This innovative ink is characterized by its dynamic surface tension: measured at 23 degrees Celsius, the dynamic surface tension at 15 milliseconds does not exceed 31 mN/m, and the difference between the dynamic surface tension at 15 milliseconds and at 1,500 milliseconds is capped at 4.0 mN/m.

Additionally, his patents include an inkjet recording ink set that integrates cyan, magenta, yellow, and black inks. Each ink formulation consists of pigments, surfactants, water, and a water-soluble organic solvent, alongside anionic self-emulsifying ether-based polyurethane. The inks utilize a combination of pigment dispersion and resinous polymer-coated pigment dispersion, carefully designed to meet specific particle size requirements to enhance print quality.

Career Highlights: Throughout his career, Hiroyuki Fushimi has worked for reputable companies, including Ricoh Company, Ltd. His expertise has driven significant advancements in inkjet technology, contributing to the development of high-quality printing solutions.

Collaborations: Fushimi has collaborated with esteemed colleagues, such as Shin Hasegawa and Yasuo Asahina. Together, they have worked on various projects that continue to push the boundaries of ink formulation and delivery systems.

Conclusion: Hiroyuki Fushimi's inventive spirit and dedication to enhancing ink technology have led to breakthrough patents that demonstrate his impact on the industry. His innovations not only reflect a commitment to quality but also signify a future where printing technology can achieve greater precision and efficiency.

Profile summary based on public USPTO records.