This inventor holds 7 USPTO granted patents. Top assignees: Nihon Denshizairyo Kabushiki Kaisha, Japan Electronic Materials Corporation. Active years: 1991-2005.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Naka-gun, JP (1997)
- Amagasaki, JP (2000)
- Kanagawa, JP (1991 - 2001)
- Kanagawa-ken, JP (2005)
Company Filing History:
6 out of 17 
1 out of 35 Years Active: 1991-2005
Title: Kazumasa Okubo: Innovator in Vertical Probe Card Technology
Introduction
Kazumasa Okubo is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of vertical probe cards. With a total of 7 patents to his name, Okubo's work has advanced the efficiency and reliability of electrical measurements in integrated circuits.
Latest Patents
One of Okubo's latest patents is the vertical probe card, designed to allow for the reuse of probes without the need for replacement when a probe is broken. This innovation features a main substrate that forms conductive patterns and a plurality of probes that droop vertically from the substrate. The design includes a probe support located at the back side of the main substrate, which is parallel to the substrate and consists of an upper guide plate and a lower guide plate. This configuration supports the probes through openings in each plate, ensuring stability during measurements.
Another significant patent involves a vertically operative type probe card assembly. This assembly includes probes with a buckling portion that allows them to make contact with electrodes of semiconductor integrated circuits. The design features a first board with a wiring pattern connected to the probes and a second board that is removably fastened to the first board. This innovative approach minimizes contact point deviation and maintains suitable contact pressure, enhancing the ease of replacing damaged probes.
Career Highlights
Kazumasa Okubo has worked with prominent companies in the electronics sector, including Nihon Denshizairyo Kabushiki Kaisha and Japan Electronic Materials Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Throughout his career, Okubo has collaborated with notable individuals such as Masao Okubo and Hiroshi Iwata. These collaborations have likely enriched his work and led to further advancements in the field.
Conclusion
Kazumasa Okubo's contributions to vertical probe card technology have significantly impacted the semiconductor industry. His innovative designs and patents continue to influence the efficiency of electrical measurements in integrated circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile