This inventor holds 20 USPTO granted patents and 2 published patent applications and 4 EPO patents, primarily in Optical Devices. Top assignees: Citizen Holdings Company, Ltd., Citizen Watch Company, Ltd., National Institute of Advanced Industrial Science and Technology. Active years: 2001-2019.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Saitama, JP (2002)
- Tokorozawa, JP (2002)
- Itabashi-ku, JP (2012)
- Bunkyo-ku, JP (2015)
- Tokyo, JP (2001 - 2019)
Company Filing History:
8 out of 450 
8 out of 2,004 
3 out of 1,766 
Years Active: 2001-2019
Areas of Expertise:
Title: **Masafumi Yokoyama: Innovator in Tire Technology and Light Modulation**
Introduction
Masafumi Yokoyama, based in Tokyo, Japan, is a renowned inventor with an impressive portfolio of 20 patents. His work primarily focuses on innovative technologies that enhance product performance, notably in the automotive and optical fields.
Latest Patents
Yokoyama's latest inventions include a **run-flat radial tire**, designed to provide safety and reliability with a unique structure. This tire boasts a cross-section height of 115 mm or greater, featuring a carcass that spans between a pair of bead portions. It incorporates two side-reinforcing rubber layers, one for the outer side and one for the inner side, which work together to improve tire performance and durability under various conditions.
Another significant innovation is his **light modulating device**, which utilizes a selective diffraction device to generate diffracted light beams of multiple orders. This device not only manipulates light but also includes a polarization plane rotating mechanism, allowing for advanced optical applications. These inventions showcase Yokoyama's dedication to advancing technology that enhances both safety and functionality.
Career Highlights
Masafumi Yokoyama has made significant contributions while being affiliated with well-respected organizations such as Citizen Watch Company, Ltd. and Citizen Holdings Company, Ltd. His work within these companies has helped propel innovations that merge functionality with cutting-edge design, particularly in the realm of electronic and mechanical applications.
Collaborations
Throughout his career, Yokoyama has collaborated with other prominent inventors in the industry, including Sadao Masubuchi and Akira Shiota. These partnerships have fostered a creative environment that has led to the development of several impactful technologies and patented inventions.
Conclusion
Masafumi Yokoyama's work exemplifies the spirit of innovation and engineering excellence. With a robust collection of patents and an illustrious career, he continues to influence the fields of tire technology and optical devices. His contributions not only enhance product performance but also pave the way for future advancements within these industries.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile