Suzuka, Japan

Iwao Yanagizawa

This inventor holds 2 USPTO granted patents. Top assignees: Kunimitsu Carbon Industrial Co., Ltd., Kunimitsu Carbon Industry Co., Ltd., Mitsuba Corporation. Active years: 1996-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Iwao Yanagizawa. Retrieved from https://idiyas.com/inventor/iwao-yanagizawa

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


% Patents Active = 50.0

Average Co-Inventor Count = 1.3

ph-index = 1

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 1996-2011

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2 patents (USPTO):Explore Patents

Title: Iwao Yanagizawa: Innovator in Electric Motor Technology

Introduction

Iwao Yanagizawa is a notable inventor based in Suzuka, Japan. He has made significant contributions to the field of electric motor technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of electric motors through innovative designs.

Latest Patents

Yanagizawa's latest patents include a carbon brush for motors and a method for producing the same. This invention features an electric motor that comprises a rotor, a coil wound around the rotor, and a carbon brush that supplies power to the coil. The brush is uniquely formed using a raw material that combines artificial graphite with flaky crystallites and natural graphite with squamous or scaly crystallites. Another significant patent is for a commutator with improved connections between carbon and metal segments. This flat commutator includes a circular arrangement of sectorial carbon segments made of conductive carbon, providing a commutating surface. The design incorporates metallic segments attached to the carbon segments, with a hub body of synthetic resin that secures the components together.

Career Highlights

Throughout his career, Yanagizawa has worked with prominent companies such as Mitsuba Electric Mfg. Co., Ltd. and Kunimitsu Carbon Industry Co., Ltd. His experience in these organizations has contributed to his expertise in electric motor technology and innovation.

Collaborations

Yanagizawa has collaborated with various professionals in his field, including his coworker Shuji Shimoyama. These partnerships have fostered a creative environment that has led to the development of his innovative patents.

Conclusion

Iwao Yanagizawa's contributions to electric motor technology through his patents demonstrate his commitment to innovation. His work continues to influence the industry and inspire future advancements in motor design.

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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