ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,694, issued on Jan. 27, was assigned to Conopco Inc. (Englewood Cliffs, N.J.).
"Unit dose capsule" was invented by Mo Dai (Shanghai) and Siyu Dong (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a method of producing a unit dose capsule for treatment of a substrate, the method comprising steps: a. placing a first sheet of water-soluble polyvinyl alcohol film over a mould having sets of cavities, each set comprising three cavities arranged on the sealing plane one after the other in circumferential direction; b. heating and applying vacuum to the film to mould the film into the cavities and hold it in place to ...