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Solid-state / Semi-solid Li-ion Battery Innovation & Patent Review

  • Company Chapter – FDK – Japan

    Version: 2026-07-13, for paid subscribers
  • This chapter covers FDK's Li-ion battery product development efforts and corresponding patent portfolio:
    • Five oxide all-solid-state product development concepts derived from the patent portfolio, spanning solid-electrolyte composition, cathode and anode active materials, electrode–electrolyte interface engineering and cell encapsulation, set against a portfolio-level AI classification of 40 patent families across solid-electrolyte categories.
    • A technology assessment covering the latest identified benchmarking data, unique-capability positioning, the leap of faith and underlying scientific hypothesis, technical approach and differentiation, timeline feasibility, scale-up risk factors, and the congruency between public statements and the patent portfolio.
    • A commercial reading of the product sampling and mid-term business-plan timelines, the target application strategy for the surface-mount chip format, manufacturing scale-up and cost-reduction routes, and the demand- and material-supply constraints that gate volume production, plus projected material / cell / process characteristics.
  • Document size: ≈3,900 words, 14 images, 1 adjacent Excel file (list of patent families with AI-based summaries)


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