Nagoya, Japan

Chikao Yamashita

This inventor holds 5 USPTO granted patents. Top assignee: Brother Kogyo Kabushiki-Kaisha. Active years: 1978-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chikao Yamashita. Retrieved from https://idiyas.com/inventor/chikao-yamashita

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 = 2.7

ph-index = 3

Forward Citations = 29(Granted Patents)


Company Filing History:


Years Active: 1978-1982

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5 patents (USPTO):Explore Patents

Title: Chikao Yamashita: Innovator in Sewing Machine Technology

Introduction

Chikao Yamashita is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of sewing machine technology, holding a total of 5 patents. His innovative designs have improved the functionality and efficiency of sewing machines, making them more user-friendly and versatile.

Latest Patents

One of his latest patents is a needle oscillating mechanism for a sewing machine. This mechanism features a rotatable cam member that controls the lateral oscillation of the needle. A contact finger engages with the cam member, allowing for precise needle positioning. The design ensures that disengagement of the contact finger does not affect the needle's position, thanks to a disconnectable coupling means. This innovation allows for seamless operation and enhanced control during sewing.

Another significant patent is for a pattern stitch sewing machine that incorporates a single operable button capable of performing multiple actions. The machine includes a needle positioning device that arrests the needle at a predetermined position and a stitch forming system for creating specific stitch patterns. The functionality of the machine can be adjusted based on the duration of the button's operation, allowing for a variety of actions with fewer controls.

Career Highlights

Chikao Yamashita is associated with Brother Kogyo Kabushiki-Kaisha, a leading company in the sewing machine industry. His work has been instrumental in advancing the technology used in sewing machines, contributing to the company's reputation for innovation and quality.

Collaborations

Throughout his career, Yamashita has collaborated with talented individuals such as Takao Sugaya and Noriyuki Yoshida. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies in sewing machines.

Conclusion

Chikao Yamashita's contributions to sewing machine technology through his patents and collaborations have made a lasting impact on the industry. His innovative designs continue to enhance the functionality and user experience of sewing machines, solidifying his legacy as a prominent inventor.

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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