Tokyo, Japan

Sakie Iwaoka

This inventor holds 3 USPTO granted patents and 3 EPO patents. Top assignee: Dai Nippon Printing Co., Ltd.. Active years: 2009-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sakie Iwaoka. Retrieved from https://idiyas.com/inventor/sakie-iwaoka

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


% Patents Active = 66.7

 

Average Co-Inventor Count = 2.6

ph-index = 2

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2009-2013

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3 patents (USPTO):Explore Patents

Title: Innovative Minds: The Contributions of Sakie Iwaoka

Introduction

Sakie Iwaoka, an inventive force located in Tokyo, Japan, has made significant strides in the field of thermal transfer sheets. With an impressive portfolio of three patents, she has demonstrated a commitment to enhancing printing technologies and materials. Her groundbreaking inventions have paved the way for improved efficiency and effectiveness in high-speed printing processes.

Latest Patents

Iwaoka's latest inventions focus on developing thermal transfer sheets that exhibit remarkable characteristics. The first patent presents a thermal transfer sheet designed to offer excellent heat resistance and slip properties, effectively preventing tailing during printing. This innovation ensures high-quality prints, even in demanding high-speed conditions. It incorporates a base material complemented by a color material layer and a heat-resistant slipping layer made from a polyamide resin, a silicone-modified polyamide resin, and an ethoxylated alcohol-modified wax.

The second patent aims to produce a thermal transfer sheet with enhanced adhesion strength of the dye layer to the base. It also ensures high reflection density along with impressive release properties from an image-receiving sheet, even under high-temperature and high-humidity conditions. This invention involves the formation of an undercoat layer containing thermoplastic resin and colloidal inorganic pigment ultrafine particles, followed by a dye layer, allowing for sharp thermal transfer images.

Career Highlights

Sakie Iwaoka is currently employed by Dai Nippon Printing Co., Ltd., a leading company known for its innovative solutions in the printing industry. Her work there has significantly contributed to advancements in thermal transfer technologies. Iwaoka's inventions reflect her dedication to improving material properties and print quality, forging a path for future innovations in the field.

Collaborations

Throughout her career, Iwaoka has collaborated with esteemed colleagues, including Daisuke Fukui and Kenichi Hirota. These partnerships have fostered an environment of creativity and innovation, enabling the exploration of new ideas and the advancement of thermal transfer sheet technologies.

Conclusion

Sakie Iwaoka stands out as a prominent inventor in the realm of thermal transfer sheets, consistently pushing the boundaries of technology and innovation. Her patents not only enhance printing efficiency but also address critical challenges faced in the industry. As she continues her work with Dai Nippon Printing Co., Ltd., her contributions are sure to influence the future of printing technologies.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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