ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,613, issued on Aug. 19, was assigned to DH Technologies Development Pte. Ltd. (Singapore).

"Three stage atmosphere to vacuum mass spectrometer inlet with additional declustering in the third stage" was invented by Thomas Biesenthal (Caledon, Canada), Hassan Javaheri (Richmond Hill, Canada) and Bradley B. Schneider (Bradford, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mass spectrometer comprises an orifice plate having an orifice, a first multipole ion guide in a first chamber downstream of said orifice plate, said first multipole ion guide comprising a plurality of rods, and a second multipole ion guide in a second chamber downstream of...