IP Library › Granted Patent US 1,092,689
Granted Patent S1
US 1,092,689 · App. 29/966,074 · Granted Sep 9, 2025

Vacuum check valve

Inventors: Junhui Yuan (Yuhuan, CN); Xuanhao Dai (Yuhuan, CN); Ming Li (Yuhuan, CN); Yinzong Zhang (Yuhuan, CN); Jinmu Zhang (Yuhuan, CN)
Assignee: ZHEJIANG FANSHENG FLUID CONTROL CO., LTD
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 1,092,689
App. No.
29/966,074
Granted
Sep 9, 2025
Kind
S1
Claims (1)

The ornamental design for a vacuum check valve, as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2024
From: YUAN, JUNHUI; DAI, XUANHAO; LI, MING; ZHANG, YINZONG; ZHANG, JINMU
To: ZHEJIANG FANSHENG FLUID CONTROL CO., LTD
Reel/Frame 068823/0751 →
References Cited (4)
US D278740S · Bolgert · 1985 [cited by examiner]
US D948667S · Kieras · 2022 [cited by examiner]
US D958938S · Kieras · 2022 [cited by examiner]
US D958939S · Kieras · 2022 [cited by examiner]