ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,696, issued on Oct. 27, was assigned to Shaun McCullough (Chesapeake, Va.).

"Retention lid for stabilizing porous membrane inserts during manipulation" was invented by Shaun David Mccullough (Pittsboro, N.C.) and Earl Puckett (Durham, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lid and a method of testing a test substance in a porous membrane insert (PMI) are dis closed, the lid including a body, sidewalls positioned along an outer perimeter of the body and configured to be seated on a shoulder of a multi-well cell culture plate, and at least one hole through the body and/or at least one knockout, wherein the lid is configured to provide t...