ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,010, issued on Feb. 17, was assigned to ZOBELE HOLDING S.P.A. (Trento, Italy).

"Toilet cleaner" was invented by Maria Garcia Subirats (Barcelona, Spain), Montserrat Riera Giner (Barcelona, Spain) and Giovanni Carrara (Trento, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a toilet cleaner comprising a cleaning agent, wherein said cleaning agent is included at a percentage between 50% and 80% by weight, and also comprising an effervescent agent at a percentage between 10% and 30% by weight. The cleaner is preferably in the form of solid granules, and it also comprises a foaming agent.The present invention allows...