This inventor holds 4 USPTO granted patents and 2 EPO patents. Top assignees: Nissin Kogyo Co., Ltd., Honda Motor Co., Ltd.. Active years: 2008-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Nagano, JP (2008 - 2011)
- Ueda, JP (2012)
Company Filing History:

Years Active: 2008-2012
Title: Akifumi Watada: Innovator in Disk Brake Technology
Introduction
Akifumi Watada is a notable inventor based in Nagano, Japan. He has made significant contributions to the field of automotive technology, particularly in disk brake systems. With a total of 4 patents to his name, Watada's innovations have enhanced the performance and safety of braking systems in vehicles.
Latest Patents
Watada's latest patents include a disk brake apparatus that features a thrust transmitting plate on the cylinder hole bottom side portion of an adjuster nut. This design incorporates a drive side cam plate and a cam spring that biases the thrust transmitting plate toward the drive side cam plate, all housed within a generally cylindrical casing. The circumferential wall of the housing is uniquely deformed inwardly to create flat portions, which contain engaging apertures. These apertures allow engaging protrusions to move only in the cylinder axis direction when engaged. Additionally, the housing is designed to be mounted in a cylinder hole by latching locking parts to a circumferential groove formed in the cylinder hole.
Another patent focuses on engaging grooves that extend in the cylinder axial direction, along with circumferential grooves formed in the middle portion of these engaging grooves. This design includes engaging ribs that interact with the engaging grooves and fit into the circumferential groove, enhancing the overall functionality of the brake system. A bleeder hole is also integrated into the caliper body, allowing for effective communication between the engaging grooves and the circumferential grooves of the cylinder hole.
Career Highlights
Throughout his career, Akifumi Watada has worked with prominent companies such as Nissin Kogyo Co., Ltd. and Honda Motor Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in automotive technology.
Collaborations
Watada has collaborated with several talented individuals in the industry, including Takenori Tsuchiya and Kazuo Koyama. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Akifumi Watada's contributions to disk brake technology exemplify his dedication to innovation in the automotive sector. His patents reflect a commitment to enhancing vehicle safety and performance, making him a significant figure in the field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile