IP Library › Granted Patent US 1,139,807
Granted Patent S1
US 1,139,807 · App. 29/936,040 · Granted Aug 4, 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 1,139,807
App. No.
29/936,040
Granted
Aug 4, 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: LOU, LIN; ZHANG, KAI; GUAN, XIN; DU, JINGGUAN
To: TIANJIN YUANZHI ENVIRONMENTAL TECHNOLOGY CO. LTD.
Reel/Frame 067017/0813 →
Priority Claims (1)
CN 202330863405.8 · Dec 28, 2023 · national
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“NPL.Frigidaire” Apr. 7, 2018, Amazon.ca, site visited May 12, 2025: https://www.amazon.ca/Frigidaire-WF3CB-Puresource-Replacement-Filter/dp/B0045LLC7K/ref=sr_ (Year: 2018). [cited by examiner]
“NPL.IcePure” Jun. 24, 2015, Amazon.ca, site visited May 12, 2025: https://www.amazon.ca/Comparable-DA29-00020B-DA29-00020A-DA29-00019A-DA97-08006A-B/dp/B00ZY6KM4E/ref=sr_ (Year: 2015). [cited by examiner]