ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,217, issued on May 13, was assigned to ENTEGRIS INC. (Billerica, Mass.).
"Process for preparing organotin compounds" was invented by David M. Ermert (Danbury, Conn.), Thomas M. Cameron (Newtown, Conn.), David Kuiper (Brookfield, Conn.) and Thomas H. Baum (New Fairfield, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an efficient and effective process for preparing certain organotin compounds having alkyl and alkylamino substituents. The process provides the organotin compounds in a highly pure crystalline form which are particularly useful as precursors in the deposition of high-purity tin oxide films in, for example, extreme ultra...