This inventor holds 13 USPTO granted patents and 2 published patent applications and 3 EPO patents. Top assignees: Hoya Corporation, Teijin Limited, Nagano Keiki Co., Ltd.. Active years: 1976-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Iwakuni, JA (1976)
- Hino, JP (1995)
- Ome, JP (1993 - 2005)
- Tokyo, JP (1982 - 2011)
- Shinjuku-ku, JP (2011)
Company Filing History:
5 out of 2,569 
3 out of 1,605 
2 out of 64 
Years Active: 1976-2011
Title: Seiichi Yokoyama: Innovator in Polarization Technology
Introduction
Seiichi Yokoyama is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, particularly in the development of polarization elements. With a total of 13 patents to his name, Yokoyama's work has advanced the understanding and application of light manipulation.
Latest Patents
One of his latest patents is a polarization element that utilizes the unique plasmon resonance wavelengths of metal elements. This innovation allows for the creation of an assembly of metal elements that effectively polarizes light. The design ensures that the geometrically sectional areas of the metal elements are smaller than the area of the irradiated light region, while the absorbing sectional areas are significantly larger, enhancing the efficiency of light absorption. Another notable patent involves polarizing glass, which incorporates shape-anisotropic metal particles. These particles are oriented and dispersed within a glass substrate, creating a concentration gradient that optimizes the polarizing function of the glass.
Career Highlights
Throughout his career, Seiichi Yokoyama has worked with esteemed companies such as Hoya Corporation and Teijin Limited. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in optical technologies.
Collaborations
Yokoyama has collaborated with notable coworkers, including Fumio Kaise and Yukimitsu Sekimori. Their combined expertise has fostered innovative solutions in the field of polarization technology.
Conclusion
Seiichi Yokoyama's contributions to the field of optical technology, particularly through his patents on polarization elements and polarizing glass, have established him as a key figure in innovation. His work continues to influence advancements in light manipulation and optical applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile