ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,141, issued on Dec. 9, was assigned to Dentsply Sirona Inc. (York, Pa.).
"Dental root canal filling composition" was invented by Joachim E. Klee (Radolfzell, Germany) and Matthias Worm (Constance, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is related to a dental root canal filling composition comprising at least one di- or polyepoxide; at least one primary monoamine; and at least one diamine; wherein the at least one primary monoamine comprises at least one cyclic non-aromatic hydrocarbon group and at least one primary amino group; wherein said at least one primary amino group is directly attached to said at least on...