Tokyo, Japan

Kotaro Fujiwara

This inventor holds 16 USPTO granted patents and 2 published patent applications, plus 3 CIPO patents and 8 EPO patents. Top assignees: Yoshino Kogyosho Co., Ltd., Toyo Aerosol Industry Co., Ltd., Yoshino Kogyosho., Ltd.. Active years: 2006-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kotaro Fujiwara. Retrieved from https://idiyas.com/inventor/kotaro-fujiwara

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

USPTO Granted Patents = 16 

% Patents Active = 81.3


 

Average Co-Inventor Count = 2.0

ph-index = 2

Forward Citations = 22(Granted Patents)


Company Filing History:


Years Active: 2006-2026

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16 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Kotaro Fujiwara

Introduction

Kotaro Fujiwara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of liquid sprayers, holding a total of 14 patents. His innovative designs have improved the functionality and efficiency of sprayers used in various applications.

Latest Patents

One of Fujiwara's latest patents is a trigger-type liquid sprayer that features a sprayer main body mounted on a container body. This design includes a nozzle member with a spray hole, a vertical supply tube, and a trigger mechanism. The reservoir cylinder is designed to supply liquid in response to the trigger's rearward movement. Additionally, a displacement curbing portion is integrated to enhance the stability of the sprayer. Another notable patent involves a trigger-type liquid sprayer that minimizes fatigue in the spring member urging the operation lever. This design includes an operation lever that is swingable and a spring member that is strategically positioned to ensure optimal performance.

Career Highlights

Throughout his career, Kotaro Fujiwara has worked with notable companies such as Yoshino Kogyosho Co., Ltd. and Toyo Aerosol Industry Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to the development of innovative products in the aerosol industry.

Collaborations

Fujiwara has collaborated with talented individuals in his field, including Shigeo Iizuka and Yoshiyuki Kakuta. These partnerships have fostered a creative environment that has led to the advancement of new technologies and designs.

Conclusion

Kotaro Fujiwara's contributions to the field of liquid sprayers demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and a desire to improve everyday products. His work continues to influence the industry and inspire future inventors.

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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