IP Library › Granted Patent US 1,121,770
Granted Patent S1
US 1,121,770 · App. 29/936,044 · Granted Apr 7, 2026

Refrigerator filter

Inventors: Lin Lou (Tianjin, CN); Kai Zhang (Tianjin, CN); Xin Guan (Tianjin, CN); Jingguan Du (Tianjin, CN)
Assignee: TIANJIN YUANZHI ENVIRONMENTAL TECHNOLOGY CO. LTD.
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Quick Facts
Patent No.
US 1,121,770
App. No.
29/936,044
Granted
Apr 7, 2026
Kind
S1
Claims (1)

The ornamental design for a refrigerator filter as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 5, 2024
From: DU, JINGGUAN; GUAN, XIN; ZHANG, KAI; LOU, LIN
To: TIANJIN YUANZHI ENVIRONMENTAL TECHNOLOGY CO. LTD.
Reel/Frame 067018/0163 →
Priority Claims (1)
CN 202330866441.X · Dec 29, 2023 · national
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