Kotatsu logoKotatsu Design & Development Inc.

Focused Design. Human-Centered Innovation. Practical Prototypes.

We’re an engineering partner that bridges vision and reality. From sketch to working prototype, we focus effort where it matters most—crafting solutions that are efficient, practical, and human-centered.

Kotatsu — Human‑Centered Design

Our Philosophy

Inspired by the kotatsu, we focus resources where they add value—cutting waste and delivering elegant, practical solutions to real problems.

Our Experience

24+ years in product development across North America, Japan, and Europe—spanning automotive systems, research and development, and specialty builds. We know how to move from sketch to reliable prototype.

Who We Help

  • Manufacturers & suppliers — prototype parts, automations, fixtures, and production-ready designs
  • Healthcare, universities & research labs — custom rigs, test apparatus, and experimental builds
  • Creative studios & special projects — interactive systems, specialty builds, and unique prototypes

Kotatsu helps you say yes to projects you might otherwise turn away.

Prototype-First

We build fast, learn early, and refine continuously—so you get working hardware that behaves in the real world.