IP Library › Granted Patent US 1,079,432
Granted Patent S1
US 1,079,432 · App. 29/996,073 · Granted Jun 17, 2025

Knife sharpener

Inventor: Hongmei Yu (Donggang, CN)
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Quick Facts
Patent No.
US 1,079,432
App. No.
29/996,073
Granted
Jun 17, 2025
Kind
S1
Claims (1)

The ornamental design for a knife sharpener, as shown and described.

References Cited (19)
US 4216627A · Westrom · 1980 [cited by examiner]
US 4441279A · Storm · 1984 [cited by examiner]
US 4538382A · Johannsen · 1985 [cited by examiner]
US 5195275A · McLean · 1993 [cited by examiner]
US 5431068A · Alsch · 1995 [cited by examiner]
US 6579163B1 · Ross · 2003 [cited by examiner]
US 7874896B1 · Watson · 2011 [cited by examiner]
US 8262438B1 · Allison · 2012 [cited by examiner]
US 8323077B2 · Nakoff · 2012 [cited by examiner]
US 10744614B1 · Allison · 2020 [cited by examiner]
US 11052512B1 · Allison · 2021 [cited by examiner]
US D992392S · Wang · 2023 [cited by examiner]
US D1058337S · Yang · 2025 [cited by examiner]
US D1062410S · Wen et al. · 2025 [cited by applicant]
US 20050048885A1 · Longbrake · 2005 [cited by examiner]
US 20070249268A1 · Swartz · 2007 [cited by examiner]
US 20110159791A1 · Heng · 2011 [cited by examiner]
US 20110177764A1 · Schwartz · 2011 [cited by examiner]
US 20220331926A1 · Allison · 2022 [cited by examiner]