Company Filing History:

11 out of 28,544

Ricoh Company, Ltd.

patents

3 out of 353

Sanyo Chemical Industries, Ltd.

patents

where one patent can have more than one assignee

Years Active: 2006-2012

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13 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 8163840 - Polyester resin for toner, toner composition and resin particle (2012-04-24),

2. 7951518 - Polyester resin for toner, toner composition and resin particle (2011-05-31),

3. 7531281 - Toner for developing latent electrostatic image, container having the same, developer using the same, process for developing using the same, image-forming process using the same, image-forming apparatus using the same, and image-forming process cartridge using the same (2009-05-12),

4. 7435521 - Toner for developing electrostatic image (2008-10-14),

5. 7405000 - Resin particle and process of producing the same (2008-07-29),

6. 7384720 - Toner for developing latent electrostatic image, container having the same, developer using the same, process for developing using the same, image-forming process using the same, image-forming apparatus using the same, and image-forming process cartridge using the same (2008-06-10),

7. 7241545 - Toner, developer using the same, toner container using the same, process cartridge using the same, image-forming process using the same and image-forming apparatus using the same (2007-07-10),

8. 7217487 - Toner, developer using the same, toner container using the same, process cartridge using the same, image-forming process using the same and image-forming apparatus using the same (2007-05-15),

9. 7166403 - Toner, developer, image developing apparatus, and image forming apparatus (2007-01-23),

10. 7157201 - Toner for developing latent electrostatic image, container having the same, developer using the same, process for developing using the same, image-forming process using the same, image-forming apparatus using the same, and image-forming process cartridge using the same (2007-01-02),

11. 7129013 - Toner and developer for developing latent electrostatic images, and image forming apparatus (2006-10-31),

12. 7056638 - Toner for electrophotography, developer using the same, process cartridge using the same, image-forming apparatus using the same, and image-forming process using the same (2006-06-06),

13. 7056636 - Dry toner, and process cartridge, image forming process and apparatus using the same (2006-06-06),

Title: Tadao Takikawa: Innovator in Toner Technology

Introduction

Tadao Takikawa is a prominent inventor based in Aichi, Japan, known for his significant contributions to the field of toner technology. With a total of 13 patents to his name, he has made remarkable advancements that enhance the performance and quality of toners used in electrostatic image development.

Latest Patents

Among his latest innovations is a polyester resin for toner, which is designed to provide a heat-fusible electrostatic image developing toner. This toner exhibits an excellent balance between fixability at low temperatures and grindability, while also ensuring high glossiness after fixing. The polyester resin is created through the polycondensation of a polyol component and a polycarboxylic acid component. It is characterized by containing 20-100 weight % of one or more polyester resins that have a storage elastic modulus ranging from 2.5×10^Pa to 5×10^Pa at 150°C. Additionally, the molar average cohesive energy of the polyol component is between 7.0×10 and 1.4×10 J.

Career Highlights

Tadao Takikawa has had a distinguished career, working with notable companies such as Ricoh Company, Ltd. and Sanyo Chemical Industries, Ltd. His work in these organizations has allowed him to develop and refine his innovative ideas in toner technology.

Collaborations

Throughout his career, Takikawa has collaborated with esteemed colleagues, including Masami Tomita and Toshiki Nanya. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Tadao Takikawa's contributions to toner technology have significantly impacted the industry, showcasing his expertise and innovative spirit. His patents reflect a commitment to enhancing the performance of toners, making him a key figure in this field.

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