Toyoshi Sawada

This inventor holds 57 USPTO granted patents and 11 published patent applications, plus 1 CIPO patent and 13 EPO patents, primarily in Image Formation Technology (CPC class G03G). Top assignees: Ricoh Company, Ltd., Rocoh Company, Ltd., Takemoto Yushi Kabushiki Kaisha. Active years: 2003-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toyoshi Sawada. Retrieved from https://idiyas.com/inventor/toyoshi-sawada

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

USPTO Granted Patents = 57 (Patent Applications = 11)

% Patents Active = 66.7

CIPO Patents = 1

EPO Patents = 13 (Patent Applications = 20)

Average Co-Inventor Count = 4.5

ph-index = 11

Forward Citations = 357(Granted Patents)

Forward Citations (Not Self Cited) = 263(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Odawana, JP (2003)
Odawara, JP (2003 - 2009)
Yokohama, JP (2010)
Hiratsuka, JP (2010 - 2014)
Hiraisuka, JP (2014)
Kanagawa-ken, JP (2012 - 2015)
Kanagawa, JP (2005 - 2018)
Shizuoka, JP (2019 - 2024)

Company Filing History:

Takemoto Yushi Kabushiki Kaisha

patents

4. 1 out of 834,570

Other

patents

where one patent can have more than one assignee

Years Active: 2003-2026

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Areas of Expertise:

Toner

Image Forming Apparatus

Process Cartridge

Developer

Electrostatic Image

Toner Set

Toner Container

Development Agent

Printed Matter

Carrier

Contact Developing Method

Latent Image

57 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12607949 - Image forming method, toner, developer, printed product, toner storage unit, and image forming apparatus (2026-04-21),

2. 12019394 - Toner, developer, toner set, toner receiving unit, image forming apparatus, and image forming method (2024-06-25),

3. 11733619 - Printed matter, infrared-absorbing-pigment-containing toner, tonner set, image forming method, and image forming apparatus (2023-08-22),

4. 11635711 - Image forming method and image forming apparatus (2023-04-25),

5. 11537057 - Toner, toner accommodating unit, image forming apparatus, and image forming method (2022-12-27),

6. 11061344 - Toner, toner stored unit, image forming apparatus, and image forming method (2021-07-13),

7. 10620557 - Toner, toner set, toner accommodating unit, image forming method, and image forming apparatus (2020-04-14),

8. 10564571 - Toner set, image forming apparatus, and image forming method (2020-02-18),

9. 10451987 - Toner, image forming apparatus, image forming method, and toner accommodating unit (2019-10-22),

10. 9885967 - Resin for toner, toner, developer, image forming apparatus, and process cartridge (2018-02-06),

11. 9851649 - Toner, developer, image forming apparatus, and image forming method (2017-12-26),

12. 9804515 - Toner, image forming apparatus, image forming method, process cartridge, and developer (2017-10-31),

13. 9785075 - Toner, developer, image forming apparatus, and process cartridge (2017-10-10),

14. 9594322 - Toner for image formation, and developer and image forming apparatus using the toner (2017-03-14),

15. 9176409 - Toner, development agent, toner container, and image forming apparatus (2015-11-03),

Title: The Innovative Contributions of Toyoshi Sawada

Introduction

Toyoshi Sawada, based in Kanagawa, Japan, is a prolific inventor with an impressive portfolio of 56 patents. His work primarily revolves around advanced toner technologies and image formation methods. Sawada's contributions have significantly impacted the field of printing and imaging systems.

Latest Patents

Among his latest patents, Sawada has developed innovations including a toner that integrates polyolefin. This toner demonstrates an exothermic peak in a cooling process within the range of 40° C. to 70° C. following a first heating process. Additionally, he has created a unique infrared-absorbing pigment-containing toner, featuring a colored layer that overlays a recording medium. This structure enhances the quality of printed materials by incorporating an infrared-absorbing pigment with specific size characteristics. These advancements reflect Sawada's commitment to improving the functionality and efficiency of printing technologies.

Career Highlights

Throughout his career, Sawada has worked with influential companies, including Ricoh Company, Ltd. His experience at such esteemed organizations has fueled his innovative spirit and led to the development of groundbreaking technologies in the imaging sector.

Collaborations

Collaborating with talented professionals, including Keiko Shiraishi and Masanori Suzuki, Sawada has fostered creativity and innovation in his projects. These partnerships have played a valuable role in pushing the boundaries of technology in printing applications.

Conclusion

Toyoshi Sawada's significant contributions to the field of toner development and image formation illustrate his prowess as an inventor. With a record of 56 patents and continual innovations, his work not only enhances imaging technology but also sets a benchmark for future advancements in the industry.

Profile summary based on public USPTO records.