Many chip makers, maybe most all of them, are both fabricators of chips and manufactures of assemblies that contain chips.
I don't know if a licensing agreement can, for example, apply to Fujitsu's assemblies that infringe but not to Fujitsu's chips that employ the patents.
If it can, and they did, then perhaps other companies that use the Fujitsu chips that contain TPL/PTSC patents (not licensed by Fijitsu) can also be required to purchase a license for their assemblies that contain those Fujitsu chips.
It sounds complicated but maybe it's not. Fujitsu makes a box containing the chips that use the patented concepts. I'm suggeting that perhaps it's the boxes that were licensed, not the chips.
You've probably guessed that I'm not a lawyer.