Patent landscapes › aquarium filter

Patent landscapes › Pets

Is a aquarium filter patented?

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

What our index shows
  • 64 US and WO patent publications since 2000 have a title matching “aquarium filterfiltration” or a close variant (our index of 9.7 million patent families; one publication per family).
  • Among the 57 best keyword matches we examined, 9 were published in 2020 or later, and the earliest was published in 2000.
  • Most frequent assignees in those matches: SPECTRUM BRANDS INC (5), JW PET CO INC (3), MIHLBAUER BRAD L (2), LIN CHI-HUNG (2).
  • Most common patent classes (CPC subclasses): A01K (57), C02F (19), B01D (11), Y10S (5).

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 aquarium filter

  1. Fish tank filter US-12616176-B2 2026 · SMITH DOUGLAS
    The invention discloses a fish tank or aquarium filter assembly system that utilizes a plurality of stacked and compressed disc filters with a plurality of cross-sectional grooves for filtering debris in the fish tank, eliminates …
    View on Google Patents
  2. Aquarium filter arrangement with vibration isolation US-12226723-B2 2025 · SPECTRUM BRANDS INC
    A filter arrangement for an aquarium is disclosed. The filter arrangement can include a filter housing assembly, a pump assembly, and a transfer tube assembly. In one aspect, the housing assembly and the pump assembly are separate…
    View on Google Patents
  3. Impeller assembly for use in an aquarium filter pump and methods US-11920607-B2 2024 · SPECTRUM BRANDS INC
    An impeller for use in an aquarium filter pump includes a shaft and a plurality of impeller blades radially extending from the shaft. Each of the impeller blades includes opposite blade faces. A depression is in each of the blade …
    View on Google Patents
  4. Aquarium filter US-9788533-B2 2017 · ELIVE LLC
    An aquarium includes a first chamber arranged to contain a first volume of liquid, a dry chamber that is adjacent the first chamber and defines a second volume, and a removable element at least partially disposed within the dry ch…
    View on Google Patents
  5. Aquarium filter US-9814220-B2 2017 · VAN AMERONGEN JASPER MICHAEL
    An aquarium filter consists of a housing with three filter elements including a coarse filter, a fine filter and a porous substrate. A pump provides for the flow of water through the filter, so that only part of the flow passes th…
    View on Google Patents
  6. Aquarium filter with water stream diversion system and method of use thereof US-9717220-B2 2017 · EUGENE G DANNER MANUFCTURING INC
    An aquarium filter with water stream diversion system and method of use thereof, having an intake, an outlet, and a pump to draw water into the intake and discharge water from the outlet. The system further includes a water stream…
    View on Google Patents
  7. Portable aquarium filter structure US-9043998-B2 2015 · WENG MIN-CHE
    An improved portable aquarium filter structure has a box body, wherein its inside has a submersible pump externally connected to an air pipe. Air enters the submersible pump through the air pipe to mix with water flow pumped by th…
    View on Google Patents
  8. Integrated aquarium filter assembly including filter media components and an upstream water pump US-8679330-B2 2014 · MIHLBAUER BRAD L
    Disclosed are filter assemblies for an aquarium tank. The disclosed assemblies include a filter basket assembly in which one or more filter baskets are connected, either directly or indirectly, to a filter pump basket. The filter …
    View on Google Patents
  9. Fish tank filter US-2009134089-A1 2009 · GEN ELECTRIC
    A filter for use in filtering and treating contaminated water in an aquarium tank includes a filter bag for receiving a continuous supply of contaminated aquarium water pumped under a predetermined pressure into the interior of th…
    View on Google Patents
  10. Aquarium filter indicator US-7513991-B1 2009 · JW PET CO INC
    A clogging indicator for a fish tank or aquarium comprising a transparent vertical tube with a float positioned therein. The indicator is designed to sit on the outside of the tank and the filter itself. The water level in the tub…
    View on Google Patents
  11. Aquarium filter US-7033491-B2 2006 · HI Q BIO TECH INTERNATIONAL LT
    An aquarium filter to increase dissolved oxygen and improve water quality comprised of a box containing a segregated water inlet tank, a water collection tank, and multiple filtration tanks; water introduced into the water inlet t…
    View on Google Patents
  12. Aquarium filter having self-priming arrangement US-7001509-B1 2006 · LIN CHI-HUNG
    An external aquarium filter comprises a flow resistive, porous member disposed between a partition wall and the filter housing. Responsive to stopping the pump, water in the intake chamber begins to reversely flow out of the intak…
    View on Google Patents
  13. Blocking device for aquarium filters designed to prevent the leakage of water and waste material WO-2006126227-A1 2006 · FERPLAST SPA
    A blocking device for aquarium filters is designed to prevent the leakage of water and waste material when removing the filter, for example during cleaning operations. The filter (10) consists of one or more filtering bodies (11) …
    View on Google Patents
  14. Aquarium filter having check valve US-2005258086-A1 2005 · LIN CHI-HUNG
    An external aquarium filter comprises an intake chamber for receiving contaminated water from an aquarium tank, a filtering chamber in flow communication with the intake chamber for filtering the contaminated water to return clean…
    View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a aquarium filter been patented?” but “has my combination of features been described before?” Pet products are a popular invention category; differences tend to be in the attachment, the dispensing or cleaning mechanism, or added electronics.

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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.