U.S. Patent 11151553 was awarded to AT&T Intellectual Property I, L.P. on October 19, 2021 and is entitled “Time and geographically restrained blockchain services.” The first named inventor is James Pratt of Round Rock, TX. The abstract contains an overview of the patent disclosure:

According to one embodiment, a blockchain service device includes an interface, a memory, and a processor. The interface receives a request to perform a blockchain service. The blockchain service includes generating a local key using a private key stored on a user device. The request includes a transaction restraint. The memory stores software used to generate an input to generate the local key. The processor generates the input in response to the request. The input is used to generate a local key that includes the at least one transaction restraint. The interface communicates the input and receives a first block in response to the communication of the input. The first block is generated using the local key and the transaction restraint. The processor inserts the first block in a blockchain, wherein inserting the first block in the blockchain preauthorizes a transaction that is limited by the transaction restraint. Link to Full Patent

This blockchain patent was originally filed on March 23, 2017  as U.S. Patent Application 15/467208 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 11151553. The primary examiner was Mamon Obeid.

AT&T Intellectual Property I, L.P., who is the original assignee of this patent, has at least 16621 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 0 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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