Heat exchanger and water heater
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 1, 2024
Grant Date -
May 4, 2023
app pub date -
Oct 13, 2022
filing date -
Nov 4, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heat exchanger includes a case, fins, and heat transfer tubes. Combustion exhaust gas passes downward in the case. The fins are disposed at a lower portion of the case and arranged in the first direction. Each of the fins includes a first end and a second end that is an opposite end from the first end in a second direction intersecting the first direction. Each of the fins includes through holes in which the heat transfer tubes are inserted. Each of the fins includes heat receiving portions arranged in the second direction and connecting portion connecting the heat receiving portions. The heat receiving portions include a first heat receiving portion disposed at the first end. The first heat receiving portion includes a first recessed portion recessed from an outer edge of an upper part of the first heat receiving portion.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2022 Application Filing Year
- F24H Class
- 306 Applications Filed
- 100 Patents Issued To-Date
- 32.68 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F24H Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Apr 1, 2028 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 1, 2032 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 1, 2036 |
