IP Library › Granted Patent US 1,140,689
Granted Patent S1
US 1,140,689 · App. 29/984,974 · Granted Aug 11, 2026

Knife sharpener

Inventors: Clay Allison (Santa Fe, NM); Branden Baca (Santa Fe, NM); Thomas Goth (Scottsdale, AZ); Ian Goth (Scottsdale, AZ); Philip M. Blank (Scottsdale, AZ)
Assignee: HollowPoint, LLC
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Quick Facts
Patent No.
US 1,140,689
App. No.
29/984,974
Granted
Aug 11, 2026
Kind
S1
Claims (1)

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

References Cited (10)
US D651887S · Elek · 2012 [cited by examiner]
US D680399S · Elek · 2013 [cited by examiner]
US D681416S · Masalin · 2013 [cited by examiner]
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US D1034140S · Li · 2024 [cited by examiner]
US D1067011S · Masalin · 2025 [cited by examiner]
US D1071687S · Huang · 2025 [cited by examiner]
US D1098868S · Cao · 2025 [cited by examiner]
US 20130095736A1 · Masalin · 2013 [cited by examiner]
Kickstarter, Venture Series Portable Knife Sharpeners, pub.Sep. 29, 2025, searched Mar. 9, 2026, https://www.kickstarter.com/projects/clayallison/venture-series-portable-knife-sharpeners/description (Year: 2025). [cited by examiner]