Is a car seat gap filler patented?

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

What our index shows

123 US and WO patent publications since 2000 have a title matching “seat gap” or a close variant (our index of 9.7 million patent families; one publication per family).
Among the 102 best keyword matches we examined, 61 were published in 2020 or later, and the earliest was published in 2002.
Most frequent assignees in those matches: BOEING CO (11), DONGWOO FINE CHEM CO LTD (6), 3M INNOVATIVE PROPERTIES CO (3), KYOSAN ELECTRIC MFG (3).
Most common patent classes (CPC subclasses): C08K (20), C08L (16), H01M (14), B29C (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 car seat gap filler

Thermally conductive curable silicone composition, cured product or gap filler obtained by curing said composition, two-pack type silicone composition set for obtaining said composition, and method for producing said composition WO-2026140104-A1 2026 · FUKOKU KK
Provided is a thermally conductive curable silicone composition which contains components (a)-(g): (a) a linear organopolysiloxane compound that has 1.5-2.0 alkenyl groups at the terminals; (b) a thermally conductive filler; (c) a…
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Universal use car seat gap filler US-2025326343-A1 2025 · XU SIQING
A universal use car seat gap filler with user adjustable gap filling device, for the user to be able to actively fill the gaps of their vehicle seats as needed; a sharp or strip shaped items organizing device, for the user to stor…
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Battery gap filler applicator and application method US-12472639-B2 2025 · HYUNDAI MOTOR CO LTD
Provided is a battery gap filler applicator applying a gap filler to a lower case of an electric vehicle battery system assembly (BSA), including: a plurality of orthogonal robots disposed at an upper portion of a conveyor device …
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Battery pack cooling structure through applying variable thickness of gap filler US-12451539-B2 2025 · SEOYON E HWA CO LTD
A battery pack cooling structure includes a battery module having a structure in which a plurality of battery cells are electrically connected and are accommodated in a case, and a battery pack having a structure in which a plural…
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Thermally conductive gap fillers with improved serviceability WO-2025064307-A1 2025 · DOW GLOBAL TECHNOLOGIES LLC
Thermally conductive compositions may include an isocyanate component containing a blocked isocyanate; an isocyanate-reactive component comprising: one or more polyetheramines, and one or more catalysts selected from a group of ca…
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Gap wall for gap filler between seat and adjacent barrier US-11628759-B2 2023 · The Private Brands LLC
A gap wall that includes a divider and a base. The divider includes a top end and a bottom end. The base is attached to the bottom end of the divider and the base can attach to a gap filler such that when attached on the gap fille…
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System and method for interlocking a mechanical gap filler, a guided vehicle door and a platform screen door US-10919544-B2 2021 · Siemens Mobility GmbH
A safety control system and a method configured for interlocking a Mechanical Gap Filler (hereafter MGF) with both a Platform Screen Door (PSD) and a Guided Vehicle Door (GVD) of a guided vehicle at standstill. The system is dispo…
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In-car storage organizer having insertion plate bodies of adjustable position to match the gap between seats US-2018251074-A1 2018 · AMOUNT INC
The present invention is an in-car storage organizer having insertion plates of adjustable position matching with gap between seats, which comprises an organizer body having a top shaped into a storage part and a bottom installed …
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Vehicle console to seat gap blocker assembly US-9701233-B1 2017 · FORD GLOBAL TECH LLC
A gap blocker assembly includes a support structure and a gap blocker panel operably coupled to the support structure. The gap blocker panel is movable to a substantially horizontal position to block a gap between a center console…
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Vehicular gap filler pocket assembly US-9272669-B2 2016 · DEMOS CHRISTOPHER G
A vehicular seat-to-hump gap filler device is inserted between a vehicular seat and hump for filling the gap between the seat and hump. The vehicular seat-to-hump gap filler device includes lower and upper pocket constructions. Th…
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Multi-functional car seat gap filling device US-9199561-B2 2015 · FUNG WAI WING
A multi-functional car seat gap filling device, comprising: an elastic rod-shaped body, at least one of the head and middle parts thereof being fitted with a storage pocket, and the tail part thereof being fitted with a through ho…
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Carbon phenolic ablative gap filler US-8367178-B1 2013 · LOCKHEED CORP
A robust, chemically, structurally, and thermodynamically compatible ablative gap filler that can be processed with ease is provided. The gap filler uses a carbon phenolic mixture that has nearly the same material property charact…
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Console and seat gap protective device US-2011266820-A1 2011 · HURWITZ MARNI MARKELL
A console and bucket seat gap protective device prevents small items of importance from falling between a seat and console of a land vehicle, airplane or boat. The console and bucket seat gap protective device includes first and s…
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Toilet Seat Gap Shield US-2007056086-A1 2007 · RAVIENDRAN THEKKEURIMBIL
A toilet defines an open topped bowl and carries a toilet seat ring with a central opening that aligns with the open topped bowl. A shield is joined to the bottom of the seat ring, positioned at the front inner edge of the seat ri…
View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a car seat gap filler been patented?” but “has my combination of features been described before?” Vehicle accessories and travel gear differ in how they attach, fold, lock or secure items.

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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.