ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,694, issued on Aug. 12, was assigned to Fisher & Paykel Healthcare Ltd. (Auckland, New Zealand).

"Valve module and filter" was invented by Andre Van Schalkwyk (Auckland, New Zealand), Stephen William Kavermann (Auckland, New Zealand), Jess Edward Donnelly (Auckland, New Zealand) and Peter Geoffrey Hawkins (Auckland, New Zealand).

According to the abstract* released by the U.S. Patent & Trademark Office: "A filter for an apparatus for delivering a flow of gas, the filter comprising: a filter body, wherein the filter body has a main compartment and a sub-compartment at least partly within the main compartment, wherein the main compartment is in fluid communication with a main compa...