US Patent Issued to Pacific Industrial Development on June 3 for "Method of making AEI-type zeolites having a high silica to alumina molar ratio (SAR)" (American, Japanese Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,582, issued on June 3, was assigned to Pacific Industrial Development Corp. (Ann Arbor, Mich.).

"Method of making AEI-type zeolites having a high silica to alumina molar ratio (SAR)" was invented by Yunkui Li (Ann Arbor, Mich.), De Gao (Troy, Mich.), David Shepard (Canton, Mich.), Wei Wu (Ann Arbor, Mich.), Jeffery Lachapelle (Northville, Mich.) and Geng Zhang (Utsunomiya, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of forming AEI-type zeolites in a hydrothermal synthesis without the use of hydrogen fluoride (HF) and in the presence of an FAU zeolite NaY with SAR less than equal to5, a Y zeolite with a SAR less than=5, or a combinat...