Tochigi, Japan

Kouichi Niinaka

This inventor holds 5 USPTO granted patents. Top assignee: Kao Corporation. Active years: 1993-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouichi Niinaka. Retrieved from https://idiyas.com/inventor/kouichi-niinaka

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


% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 3

Forward Citations = 173(Granted Patents)


Location History:

  • Ichikai, JP (1993)
  • Tochigi, JP (1994 - 1998)
  • Ichikai-machi, JP (1998)

Company Filing History:


Years Active: 1993-1998

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5 patents (USPTO):Explore Patents

Title: Kouichi Niinaka: Innovator in Skin-Care Technology

Introduction

Kouichi Niinaka is a prominent inventor based in Tochigi, Japan. He has made significant contributions to the field of skin-care technology, holding a total of 5 patents. His innovative work focuses on enhancing skin health and appearance through advanced formulations.

Latest Patents

One of Niinaka's latest patents is an external skin-care composition that includes hydroxycarboxylic acids or their derivatives. This composition is designed to provide excellent moisturizing effects, prevent skin roughness, and enhance skin tone while reducing dullness. Another notable patent is for a patch that features a water-soluble adhesive sheet, which is convenient for handling and offers warm-bathing effects on the application site. These inventions reflect his commitment to improving cosmetic skin-care solutions.

Career Highlights

Kouichi Niinaka is associated with Kao Corporation, a leading company in the consumer goods sector. His work at Kao has allowed him to develop innovative products that cater to the needs of consumers seeking effective skin-care solutions.

Collaborations

Throughout his career, Niinaka has collaborated with notable colleagues, including Tetsuro Kamiya and Masakazu Yamaguchi. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Kouichi Niinaka's contributions to skin-care technology through his patents demonstrate his innovative spirit and dedication to enhancing skin health. His work continues to influence the cosmetic 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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