2 ms·

The primary e ink patents also have already expired, they are from late 90s: https://patents.google.com/patent/US5930026 https://patents.google.com/patent/US593

• monocasa 6y ago
  That is _a_ patent, which is expired, but not the only patent, or the lynchpin of IP keeping people from independently making e-ink style screens. I generally have rule about being courteous to our fellow HNers and not doing something that could be cited as evidence of willful infringement (and triple damages), but I'll forgo it in this one case with the disclaimer I'll have around it in order to help dispel the rumors going around here that somehow patents aren't at issue. There are also other patents. = = = = = = A C T I V E P A T E N T = = = = = = Do not look at this patent if you work in the space of computer display technology. https://patents.google.com/patent/US9075280B2/en https://patents.google.com/patent/US9075280B2/en = = = = = = A C T I V E P A T E N T = = = = = =