THERMAL COMFORT WHEELCHAIR BACKREST
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Mar 23, 2023
app pub date -
Sep 9, 2021
filing date -
Sep 10, 2020
priority date (Note) -
Published
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
A backrest for a wheelchair or other mobility device configured to provide user controllable cooling and heat to the wheelchair user's back. The cooling element includes a Peltier chip, heat sink and gel pad for user contact. The heating element includes heating wire interposed between the fabric cover and the compressible foam of the backrest cushioning. The cooling element and heating element both move with the movement of the fabric cover so as to provide good heat conduction contact without adversely affecting cushioning. The backrest includes a tillable mount.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
CA | A1 | CA3092701 | Sep 10, 2020 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
APPLICATION LAID OPEN | THERMAL COMFORT WHEELCHAIR BACKREST | Mar 10, 2022 | |||
EP | A1 | EP4210543 | Sep 09, 2021 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
APPLICATION PUBLISHED WITH SEARCH REPORT | THERMAL COMFORT WHEELCHAIR BACKREST | Jul 19, 2023 | |||
AU | A1 | AU2021341343 | Sep 09, 2021 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
OPEN TO PUBLIC INSPECTION | Thermal comfort wheelchair backrest | Mar 02, 2023 | |||
WO | A1 | WO2022051851 | Sep 09, 2021 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
INTERNATIONAL APPLICATION PUBLISHED WITH INTERNATIONAL SEARCH REPORT | THERMAL COMFORT WHEELCHAIR BACKREST | Mar 17, 2022 | |||
CA | A1 | CA3168090 | Sep 09, 2021 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
APPLICATION LAID OPEN | THERMAL COMFORT WHEELCHAIR BACKREST | Mar 17, 2022 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
THUJA INNOVATIONS INC | 4401 PARKWOOD TERRACE VICTORIA V8X 4Z8 |
International Classification(s)

- 2021 Application Filing Year
- A61G Class
- 858 Applications Filed
- 442 Patents Issued To-Date
- 51.52 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
CAI, Mingjie | Victoria, CA | 3 | 1 |
# of filed Patents : 3 Total Citations : 1 | |||
MAGYAR, Robert Stanford | Victoria, CA | 5 | 28 |
# of filed Patents : 5 Total Citations : 28 | |||
QIU, Jintao | Shanghai, CN | 5 | 11 |
# of filed Patents : 5 Total Citations : 11 |
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Patent Citation Ranking
- 1 Citation Count
- A61G Class
- 80.57 % this patent is cited more than
- 2 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 23, 2026 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 23, 2030 |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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