Utsunomiya, Japan

Ryotaro Takada

This inventor holds 5 USPTO granted patents and 3 published patent applications. Top assignee: Honda Motor Co., Ltd.. Active years: 2012-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryotaro Takada. Retrieved from https://idiyas.com/inventor/ryotaro-takada

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

Calculating rank
USPTO Granted Patents = 5 

% Patents Active = 80.0

Average Co-Inventor Count = 3.2

ph-index = 2

Forward Citations = 6(Granted Patents)


Location History:

  • Sayama, JP (2012)
  • Tochigi, JP (2015)
  • Utsunomiya, JP (2014 - 2019)

Company Filing History:


Years Active: 2012-2019

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5 patents (USPTO):Explore Patents

Title: Ryotaro Takada: Advancing Sliding Materials for Engine Components.

Introduction. Ryotaro Takada is an inventor based in Utsunomiya, Japan, whose patent work focuses on sliding components and materials for mechanical applications. He is associated with Honda Motor Co., Ltd. and is credited with 5 patents.

Latest Patents. Takada’s recent patent work includes a piston for an internal combustion engine. The design places solid-lubrication parts on the piston skirt’s sliding-contact surface, combining silver, silver alloy, copper, or copper alloy with carbon material or carbide ceramics.

Another invention concerns a sliding member and a method for producing it. The design uses a resin-containing undercoat layer and a solid-lubricating portion made from silver, silver alloy, copper, or copper alloy. An intermixture layer between them combines material from both layers to improve adhesion between the base member’s surface and the metal coating.

Career Highlights. Takada’s disclosed inventions address friction, lubrication, and the durability of sliding surfaces. His work connects material-layer design with practical components, including internal-combustion-engine pistons.

Collaborations. Takada’s listed coworkers include Mayumi Saruyama and Yositaka Tsujii. His association with Honda Motor Co., Ltd. places his patent work within the company’s engineering and innovation environment.

Conclusion. Ryotaro Takada’s patents reflect a focused contribution to sliding-member technology, with designs intended to improve lubrication and adhesion in mechanical components.

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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