ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,682, issued on May 13, was assigned to Canon K.K. (Tokyo).

"Image forming apparatus having developing apparatus with filter covering vent opening and shutter to shield opening" was invented by Hiroyuki Munetsugu (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A development apparatus to and from which a toner container is attachable and detachable includes a developing roller, a storage unit configured to store toner to be carried by the developing roller, an attachment unit to and from which the toner container is attachable and detachable and provided with a reception port for receiving toner from the toner container to the storage ...