Patent landscapes › kitchen knife sharpener

Patent landscapes › Kitchen & cooking

Is a kitchen knife sharpener patented?

Short answer: specific designs of a kitchen knife sharpener have been patented many times, but "a kitchen knife sharpener" as a general idea is not what is protected. What matters is the exact combination of features in your version.

What our index shows
  • 301 US and WO patent publications since 2000 have a title matching “knife sharpener” or a close variant (our index of 9.7 million patent families; one publication per family).
  • Among the 213 best keyword matches we examined, 67 were published in 2020 or later, and the earliest was published in 2000.
  • Most frequent assignees in those matches: EDGECRAFT CORP (5), ALLISON CLAY A (4), STALLEGGER HARALD (4), WU SHIH-PIAO (3).
  • Most common patent classes (CPC subclasses): B24D (133), B24B (112), B26B (10), B26D (8).

Counts come from keyword matching on titles and abstracts, so they are indicative, not a legal count. Some matches are different products that share a word.

14 real patent publications related to a kitchen knife sharpener

  1. Knife sharpener capable of adjusting two sharpening blades simultaneously WO-2025023341-A1 2025 · OLKERNY CO LTD
    The present invention relates to a knife sharpener capable of adjusting two sharpening blades simultaneously, comprising: an outer case unit (100) having an inner space unit (101); a pair of screw units (200) coupled by means of a…
    View on Google Patents
  2. Knife block with storage slot blade sharpeners and cutlery set using same US-12150573-B2 2024 · CALPHALON CORP
    A knife block is described that includes a block body and a block insert that is coupled to the block body. The block insert includes a sharpening element holder and a cap attached to the sharpening element holder. The cap and the…
    View on Google Patents
  3. Knife sharpener US-2024238932-A1 2024 · EDGECRAFT CORP
    A knife sharpener of the present disclosure comprises a housing defining a hollow interior and an interchangeable knife guide cartridge releaseably coupled to the housing. The interchangeable knife guide cartridge improves an oper…
    View on Google Patents
  4. Fish scaling, cutting blade glove with attached knife sharpener and flash light US-10667533-B2 2020 · LUGO CRYSTAL M
    A glove for facilitating grasping a fish while scaling, gutting, cleaning, and cutting the fish. The glove has four elongated finger portions and an elongated thumb portion extending from a palm region. A plurality of fish scaling…
    View on Google Patents
  5. Knife sharpener for asian and european/american knives US-9168627-B2 2015 · ELEK BELA
    A knife sharpener sharpens a wide range of knives and blades. The knife sharpener includes an angle guide associated with a first stage abrasive surface at an angle in the range of 12-18 degrees. A second stage is provided at an a…
    View on Google Patents
  6. Adjustable knife sharpener US-9138850-B2 2015 · NAT PRESTO IND
    A motorized knife sharpener and related methods of sharpening knives, wherein the knife sharpener is capable of sharpening knives of varying types and styles. The motorized knife sharpener includes a housing, motorized grinding as…
    View on Google Patents
  7. Container for storing knifes, utensils, and the like having integral blade sharpener US-8905825-B2 2014 · HUFF BERNARD G
    A container for storing at least one object, such as a knife, utensil, and the like, wherein the object has a blade that is occasionally dressed is disclosed. The container includes a housing presenting an object-receiving opening…
    View on Google Patents
  8. Knife sharpener with anti-rocking blade-conforming clamping members US-8303381-B2 2012 · SCHWARTZ EDWARD A
    A clamping-type knife sharpener is designed with anti-rocking blade holding capability. The knife sharpener includes first and second clamping members and a clamping member adjustment mechanism configured to adjustably manipulate …
    View on Google Patents
  9. Knife sharpener with improved knife guides US-7494403-B2 2009 · EDGECRAFT CORP
    Various forms of knife guides are provided for knife sharpeners to minimize damage to the knife blade. The knife guides include the provision of flexible fibers on the guide surface and further include rings, such as O-rings on an…
    View on Google Patents
  10. Knife sharpener US-7467991-B2 2008 · GB II CORP
    The present disclosure concerns embodiments of an improved knife sharpener. In particular embodiments, the knife sharpener has an elongated sharpening member, which can be, for example, an abrasive sharpening rod. The sharpening r…
    View on Google Patents
  11. Knife sharpener WO-2006101284-A1 2006 · SONG YOUNG HUNG
    This design is about a knife sharpener which can polish one or both sides of a blade. It connects a gear(10) to the both sides of a motor(12), connects a gear connection tube(9) forming a hole within to the gear(10), installs an a…
    View on Google Patents
  12. Manual knife sharpener with angle control US-6881137-B2 2005 · EDGECRAFT CORP
    A sharpener for blades comprises a physical structure supporting at least one abrasive surface. A displaceable guiding plate having an integral linear structural feature of the support is disposed toward one side of the abrasive s…
    View on Google Patents
  13. Knife and blade sharpener US-6769327-B2 2004 · FURITECHNICS PTY LTD
    A knife sharpener ( 10 ) has pairs of overlapping, resiliently flexible fingers or strips ( 21-23, 31-33 ) to form opposed sharpening faces ( 27-29, 37-39 ) operable to engage at least one cutting edge ( 101 ) on a knife blade ( 1…
    View on Google Patents
  14. Knife and broadhead blade sharpener US-6142038-A 2000 · KENESKY THEODORE
    A sharpening tool for the sharpening of knives, broadhead arrows and related implements. The sharpener comprises a body with a handle, a handguard, and recesses for detachably mounting rectilinear sharpening elements. The recesses…
    View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a kitchen knife sharpener been patented?” but “has my combination of features been described before?” Sharpeners differ in the angle guide, abrasive arrangement, and mounting.

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First-look landscape. Not exhaustive. Not legal advice. This page lists keyword-matched publications from a limited database; it does not say whether any product is or isn't covered by a patent, whether a patent is still in force, or whether your idea is patentable. Consult a registered patent attorney or agent.