Kiryu, Japan

Masaru Ishikawa

This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Mitsuba Corporation. Active years: 2013-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaru Ishikawa. Retrieved from https://idiyas.com/inventor/masaru-ishikawa-9tynietx

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0


Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2013-2015

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2 patents (USPTO):Explore Patents

Title: Masaru Ishikawa: Innovator in Windshield Wiper Motor Technology

Introduction

Masaru Ishikawa is a notable inventor based in Kiryu, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of windshield wiper motors. With a total of 2 patents to his name, Ishikawa's innovations have enhanced the functionality and efficiency of wiper systems.

Latest Patents

Ishikawa's latest patents include advanced designs for windshield wiper motors. One patent describes a wiper motor that features an armature, an armature shaft, and a core composed of eighteen teeth portions. It also includes a commutator with eighteen commutator bars and a winding made up of eighteen coil portions. The design incorporates an equalizer with nine connecting conductors and three brushes arranged to ensure optimal performance. The first brush connects to a common electric potential, while the second and third brushes are used for low and high-speed rotation of the armature, respectively.

Another patent outlines a motor that includes a yoke with a four-pole magnet attached to its inner surface. This design features a gear case that houses a speed-reduction mechanism and a brush holder with a through hole for a commutator attached to the armature shaft. The arrangement of the brushes allows for efficient operation, with the second brush positioned 90 degrees from the first brush.

Career Highlights

Masaru Ishikawa has spent a significant part of his career at Mitsuba Corporation, where he has focused on developing innovative automotive components. His work has contributed to the advancement of wiper motor technology, making vehicles safer and more reliable in adverse weather conditions.

Collaborations

Ishikawa has collaborated with fellow inventor Kenji Sakata, working together to enhance the design and functionality of automotive components. Their partnership has led to the development of cutting-edge technologies that benefit the automotive industry.

Conclusion

Masaru Ishikawa's contributions to windshield wiper motor technology exemplify his innovative spirit and dedication to improving automotive safety. His patents reflect a commitment to excellence and a desire to push the boundaries of engineering.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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