Otsu, Japan

Tadashi Kohara

This inventor holds 4 USPTO granted patents. Top assignees: Toray Industries, Inc., Toray Engineering Company, Limited. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadashi Kohara. Retrieved from https://idiyas.com/inventor/tadashi-kohara

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 = 4.0

ph-index = 3

Forward Citations = 58(Granted Patents)


Location History:

  • Otsu, JA (1976)
  • Ohtsu, JP (1983)
  • Otsu, JP (1978 - 1990)

Company Filing History:


Years Active: 1976-1990

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4 patents (USPTO):Explore Patents

Title: The Innovations of Tadashi Kohara

Introduction

Tadashi Kohara is a notable inventor based in Otsu, Japan. He has made significant contributions to the field of yarn technology, holding a total of 4 patents. His work focuses on improving the efficiency and quality of yarn production processes.

Latest Patents

One of his latest inventions is a yarn winding device. This device comprises a yarn feeding unit that feeds yarn at a predetermined speed, an absorbing unit that absorbs variations in yarn speed, a tensioning unit that applies a specific tension to the yarn, and a winding unit that winds the yarn onto a bobbin while traversing it. Additionally, it features a yarn detecting unit that determines the presence of yarn in the absorbing unit and a control unit that adjusts the winding speed based on signals from the detecting unit. This innovation allows for the creation of cone cheese packages or ribbonless packages under constant tension.

Another significant patent is for a process and apparatus for simultaneously drawing and false-twisting thermoplastic synthetic yarn. This invention allows for the drawing of undrawn or partially drawn yarn under dry hot conditions while being false-twisted. The apparatus includes a yarn heater with both dry and wet heating components, ensuring optimal processing conditions.

Career Highlights

Tadashi Kohara has worked with prominent companies in the textile industry, including Toray Industries, Inc. and Toray Engineering Company, Limited. His experience in these organizations has contributed to his expertise in yarn technology and innovation.

Collaborations

Throughout his career, Kohara has collaborated with talented individuals such as Seiichi Yamagata and Masaaki Sakai. These partnerships have likely enhanced his inventive capabilities and led to the development of groundbreaking technologies in yarn production.

Conclusion

Tadashi Kohara's contributions to yarn technology through his innovative patents demonstrate his commitment to advancing the industry. His inventions not only improve production efficiency but also enhance the quality of yarn products.

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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