GENEVA, Oct. 25 -- GREEN DRAIN DO BRASIL HOLDING LTDA (RUA CUBATAO, 945 - Conjunto 16004013-043 SAO PAULO) filed a patent application (PCT/BR2025/050146) for "DRAIN VALVE DEVICE" on Apr 17, 2025. With publication no. WO/2025/217709, the details related to the patent application was published on Oct 23, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Inventor(s): CALFAT RAVAGNANI, Paulo (RUA JOAQUIM FLORIANO, CONJ 41 - ITAIM BIBI04534-004 SAO PAULO)
Abstract: Disclosed is a drain valve device configured for selective installation within a drainage pipe of a plumbing system in order to improve flow while ...