Wakayama, Japan

Shigeki Nagashima

This inventor holds 8 USPTO granted patents and 3 EPO patents. Top assignee: Kao Corporation. Active years: 2004-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeki Nagashima. Retrieved from https://idiyas.com/inventor/shigeki-nagashima

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

Calculating rank

% Patents Active = 62.5

 

Average Co-Inventor Count = 2.9

ph-index = 2

Forward Citations = 21(Granted Patents)


Company Filing History:


Years Active: 2004-2014

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8 patents (USPTO):Explore Patents

Title: Shigeki Nagashima: Innovator in Water-Based Inks

Introduction

Shigeki Nagashima is a prominent inventor based in Wakayama, Japan. He has made significant contributions to the field of ink technology, particularly in the development of water-based inks for ink-jet printing. With a total of 8 patents to his name, Nagashima's work has greatly influenced the printing industry.

Latest Patents

Nagashima's latest patents focus on innovative formulations for water-based inks. One of his notable inventions is a water dispersion for ink-jet printing that includes two types of carbon blacks and a water-insoluble polymer. This formulation enhances image density, fixing properties, and storage stability. Another significant patent involves a water-based ink that not only achieves high optical density but also demonstrates excellent light-fastness. These advancements are crucial for improving the quality and durability of printed images.

Career Highlights

Shigeki Nagashima is currently associated with Kao Corporation, a leading company in the field of consumer products and chemicals. His work at Kao has allowed him to focus on developing cutting-edge ink technologies that meet the demands of modern printing applications.

Collaborations

Throughout his career, Nagashima has collaborated with notable colleagues, including Nobuyuki Takizawa and Yukihiro Nakano. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Shigeki Nagashima's contributions to the field of water-based inks have established him as a key figure in ink technology. His patents reflect a commitment to enhancing the quality and performance of printing materials. His work continues to impact the industry positively.

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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