The patent, titled "Process for Recovering Lithium from Brines", is the company's third application  - notices of allowance have also been earlier issued for two others.

The company noted that the three US patent applications comprise a portion of Standard Lithium's novel and proprietary technique for continuous DLE from lithium brines.

A Notice of Allowance is issued by the USPTO after examination of a patent application and a determination that a patent should be granted from the application. Standard Lithium anticipates the issue of the formal registration of this third U.S. patent application in the coming months.

"We are pleased to have received the Notice of Allowance for the final U.S. patent application of the Company's lithium extraction technology," commented Dr. Andy Robinson, Standard Lithium's President, and COO, adding, "We will continue to strengthen our IP portfolio but more importantly we are actively advancing our south Arkansas lithium projects and doing so by applying sustainable, scalable and fully-integrated modern processing technologies to unlock new U.S. commercial lithium production."