ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,848, issued on June 17, was assigned to Velan Inc. (Montreal).
"Top entry valve for severe industrial applications" was invented by Nicolas Herve Francois Lourdel (Montreal), Michel Sylvain Mario Paquin (Sainte-Cecile de Milton, Canada), Fadila Khelfaoui (Montreal), Luc David Vernhes (Hampstead, Canada), Vinh Van Nguyen (Houston) and Duc Thanh Tran (Montreal).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-piece valve shell (body and bolted-on top bonnet having external fins to dissipate heat) structure reduces possible leakage paths while also providing a top-side ball/stem installation/removal path (when the bonnet piece is not present) to fac...