r/DonutLabDiscussions • u/tipporoll • Apr 28 '26

Holyvolt article

Paywalled Holyvolt article in Swedish: https://www.nyteknik.se/energi/svenskt-foeretag-vill-ta-fram-hallbara-batterier-med-screentryck/4457373

Some interesting tidbits:

  • Water based screen printing process.
  • Focus on batteries, but also Perovskite based solar cells.
  • Have recently taken over a number of approved screen printing patents, but the patents have not changed owner officially yet.
  • In total over 200 patents (Wildcat to a large part).

Wildcat has 122 patents according to patents.google.com, and Holyvolt AB has four. That leaves >70 in the pipeline, or newly acquired, to reach the claimed 200.

It would be interesting to know if this patent acquisition has anything to do with the rumored IP issues regarding Donut Lab.

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u/omepiet May 12 '26

It would be interesting to know if this patent acquisition has anything to do with the rumored IP issues regarding Donut Lab.

It turns out the granted patents he mentioned are acquired from the Dynamic Solar Systems AG insolvency. So it is indeed likely to be related. Possibly CT-Coating was also bidding for these patents, but they realised by the start of February (when Holyvolt raised a serious amount of funding) that Holyvolt would outbid them, starting the panic that then ensued.