Inventor

ZHANG RONGYU

CN6 patents

⚠️ This page may combine multiple inventors who share the name “ZHANG RONGYU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

XIAMEN R&T PLUMBING TECHNOLOGY CO LTD

4 patents

US9790675B2Oct 17, 2017

Double flow control mechanism of a soft touch drain valve and a double flow control method thereof

XIAMEN R&T PLUMBING TECHNOLOGY CO LTD2 citations67

US12378755B2Aug 5, 2025

WANG BING

1 patent

US8266732B1Sep 18, 2012

Auxiliary siphon device for the toilet

WANG BING6 citations70

ZHANG RONGYU

1 patent

US9587387B2Mar 7, 2017

Dual-drainage switching mechanism of water tank

ZHANG RONGYU0 citations31

ZHANG RONGYU

XIAMEN R&T PLUMBING TECHNOLOGY CO LTD

Double flow control mechanism of a soft touch drain valve and a double flow control method thereof

Water tank drainage volume control structure, and toilet

Double-flush light-touch drain valve and double-flush control method

Effort-saving flap-type drain valve

WANG BING

Auxiliary siphon device for the toilet

ZHANG RONGYU

Dual-drainage switching mechanism of water tank