The patent describes a ledger-independent system for helping users to create and manage tokens across different networks.
The only non-Chinese firm in the rankings, IBM, came fourth in terms of number of patents.
IGT's bitcoin funding patent comes as the gambling tech giant's plans for cashless wagering move forward.
CipherTrace has filed two patent applications it claims offer technologies that could help authorities in tracking monero transactions.
Crypto IP "puts us in a good position" for central bank digital currencies, said Mastercard President Miebach.
Ripple's patented design would allow derivatives to settle based on external information – such as temperature data.
Chinese conglomerate Alibaba is on track to become the largest blockchain patent holder, having filed ten times more than closest rival IBM.
Square said the Cryptocurrency Open Patent Alliance (COPA) will allow companies to access and share tech innovations with one another.
“It would be impossible for human traders to track” crypto's 24/7 informational onslaught on their own, Capital One said.
Data center power management firm Lancium filed a lawsuit against Layer1 today, alleging the bitcoin mining firm’s operations had infringed upon its patent.
The e-commerce firm says its new patent would improve upon current systems used by blockchains to communicate with one another.
The filing details a way for fiat currencies, like the U.S. dollar, to be turned into a central bank digital currency.
The e-commerce giant has patented a blockchain-based means of vetting the originality of songs.
Blockstack, the startup building a decentralized backbone for Web 3.0, is open-sourcing its two patents – kinda.