Mikio Oohara

Title: Mikio Oohara and Carpet-Yarn Innovation.

Introduction

Mikio Oohara is an inventor associated with Mihara, Japan, and Teijin Limited. His patent work focuses on polyamide multifilament yarns and methods for producing cut-pile carpets. He is credited with 2 patents.

Latest Patents

Oohara’s listed patents include “Method of Manufacturing a Cut Pile Carpet” and “Cohesive Bulky Carpet Yarn of a Polyamide Continuous Multifilament.”

These inventions describe a bulky polyamide multifilament yarn whose filaments are partially bonded through heat setting while the yarn is false-twisted. The resulting yarn has alternating twists and latent torque. In one method, the yarn is heat-treated under constrained conditions, preferably with saturated or superheated steam, to reduce its torque before it is tufted into a carpet substrate and cut into piles. In another approach, the yarn is tufted and cut first, then the carpet is heat-treated so that torque develops in the piles and creates true twists.

Career Highlights

Oohara’s patent contributions address yarn structure and carpet manufacturing processes, with an emphasis on controlling twist, bulk, and pile formation. His work is associated with Teijin Limited, a company active in advanced materials and fibers.

Collaborations

Koji Tajiri and Kiyoshi Maruo are identified as Oohara’s coworkers. Their names are associated with the collaborative context of his work.

Conclusion

Mikio Oohara’s patents describe techniques for producing cohesive, bulky polyamide yarn and using its twist behavior to shape cut-pile carpets.