Patent landscapes › Office, school & tools
Is a paper shredder patented?
Short answer: specific designs of a paper shredder have been patented many times, but "a paper shredder" as a general idea is not what is protected. What matters is the exact combination of features in your version.
What our index shows
- 1,064 US and WO patent publications since 2000 have a title matching “shredder” or a close variant (our index of 9.7 million patent families; one publication per family).
- Among the 453 best keyword matches we examined, 69 were published in 2020 or later, and the earliest was published in 2000.
- Most frequent assignees in those matches: MICHILIN PROSPERITY CO LTD (35), AURORA OFFICE EQUIP CO LTD SHANGHAI (21), LO EMILY (19), FELLOWES INC (16).
- Most common patent classes (CPC subclasses): B02C (424), Y02W (23), B65F (21), Y10T (14).
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 paper shredder
- Elasticized funnel for dumping of paper shredder waste bin US-11046568-B2 2021 · HOFFERT DEBORAH
A nylon fabric funnel with a diameter of approximately 15 inches at the upper inlet opening, having an elastic band encased in the nylon, with a stretchability factor of approximately 0%-30%, a length of approximately 24 inches, a…
View on Google Patents - Paper shredder cutting blade set US-8646714-B2 2014 · CHEN WAYNE
A blade set for paper shredders is disclosed. In one embodiment, a notched blade having at least two notches in proximity to a central hole is brought into contact with a mating blade also having a central hole. Force is applied t…
View on Google Patents - Round cutter-blade of a paper shredder US-7931224-B2 2011 · AURORA OFFICE EQUIPMENT CO LTD
A round cutter-blade of a paper shredder includes a body having a surface, a periphery, and an opening formed therethrough; and at least one triangular shaped knife-edge that is integrally formed with the surface of the body and i…
View on Google Patents - Multi-stage paper shredding cutter and paper shredder WO-2011082615-A1 2011 · DONGGUAN ELITE ELECTRIC HARDWARE PRODUCT CO LTD
The invention discloses a paper shredding cutter (10) comprising a cutter table (11) and a cutter shaft (12). The cutter table (11) is provided with a flange (112) formed with a plurality of notches (1121). A raised tooth (1122) i…
View on Google Patents - Paper Shredder Blade with a Reinforced Structure US-2010294870-A1 2010 · DONGGUAN TIEZHI ELECTRONIC CO LTD
The invention relates to the technical field of paper shredder, in particular to a paper shredder blade with a reinforced structure, which comprises a cutter body in the shape of a sheet, a mounting hole is arranged on the cutter …
View on Google Patents - Cutter structure of a paper shredder US-7641136-B2 2010 · AURORA OFFICE EQUIPMENT CO LTD
The present invention discloses a cutter structure of a paper shredder, which comprises a pull-rod ( 23 ), paper guide combs ( 24 ), cutter arbors ( 21 ), and at least one cutter-blade set composed of two cutter-blades ( 22 ), wit…
View on Google Patents - Combinative cutting wheel of a rotary cutter of paper shredder US-7641135-B1 2010 · LO EMILY
A combinative cutting wheel of a rotary cutter of paper shredder is composed of two sets of edge rings having cutting edges on outer rings thereof, and a plastic base ring having a spacer. A center of the aforementioned plastic ba…
View on Google Patents - Foot-driven device for displacing a paper shredder bin US-7604187-B1 2009 · LO EMILY
The present invention provides a foot-driven device for displacing a paper shredder bin, and is a separable paper shredder bin structured from an outer frame and an inner bin. A front edge of a bottom portion of the outer frame is…
View on Google Patents - Blade for a paper shredder cutting tool US-7328867-B1 2008 · LO EMILY
A blade for a paper shredder cutting tool that includes an improved structure for one of two blades of each cutter of two rotary cutters of a paper shredder cutting tool. A protruding ring protrudes from a rim of a center hole of …
View on Google Patents - Blade pairs for a paper shredder US-7401747-B2 2008 · SPLENDID ELECTRONICS SHENZHEN
Blade pairs for a paper shredder comprises two single blades with a flange rib on the surface of each blade, and the flange ribs of two single blades are against each other when shredding the paper. A hole is in the center of each…
View on Google Patents - Rocking wastebasket or bin for paper shredder US-2007295842-A1 2007 · MICHILIN PROSPERITY CO LTD
A rocking wastebasket or bin for paper shredder, including a machine body having cutting blades therein and a wastebasket or bin for containing paper chips, wherein the wastebasket or bin has a section of planar placement surface …
View on Google Patents - Blade of a paper shredder US-6513740-B2 2003
A paper shredder has two rotary cutters each having multiple blades spaced apart from each other. Each blade has a first cutting blade with multiple cutting edges and a second cutting blade with multiple cutting edges alternate wi…
View on Google Patents - Waste paper bin/shredder which comprises static advertising and which is safe to use WO-03051518-A1 2003 · SANCHEZ ANDRES JOSE LUIS
The invention relates to a waste paper bin/shredder which comprises static advertising and which is safe to use. The invention consists of a housing (1) comprising two receptacles; a shredding receptacle (D) and a container (C). …
View on Google Patents - Blade of paper shredder US-6390400-B1 2002
A blade is designed for use in the paper shredder and is formed of a main body which is provided in the center thereof with a through hole for mounting the blade on a shaft rod. The main body is provided in the periphery thereof w…
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What this means for your idea
Because patents cover specific combinations of features, the useful question is not “has a paper shredder been patented?” but “has my combination of features been described before?” Tools and office products differ in grips, adjustment mechanisms, and how blades or bits are held and changed.
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Guides that help with this
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.