Linked hot water supply system
US-12590710-B2 · Mar 31, 2026 · US
More than one gas or oil fired boiler
More than one gas or oil fired boiler · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F24D2200/043 |
| Official title | More than one gas or oil fired boiler |
| Display label | More than one gas or oil fired boiler |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 2 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Water heating system and water heater
US-2026022861-A1 · Jan 22, 2026 · US
Water heater
US-2025085024-A1 · Mar 13, 2025 · US
Diagnostic method of cross-wire fault
US-2025075926-A1 · Mar 6, 2025 · US
Hot water supply system
US-2024361007-A1 · Oct 31, 2024 · US
Hot water supply system
US-2024361039-A1 · Oct 31, 2024 · US
Systems and methods for adaptive flow across multiple water heaters
US-2024344739-A1 · Oct 17, 2024 · US
Water heater having highly efficient and compact heat exchanger
US-11761677-B2 · Sep 19, 2023 · US
Linked hot water supply system
US-2023266020-A1 · Aug 24, 2023 · US
On-demand tankless high volume capable water heating system
US-11608992-B2 · Mar 21, 2023 · US
Water heater having highly efficient and compact heat exchanger
US-2023026841-A1 · Jan 26, 2023 · US
On-demand tankless high volume capable water heating system
US-2021116135-A1 · Apr 22, 2021 · US
On-demand tankless high volume capable water heating system
US-10907840-B2 · Feb 2, 2021 · US
Water heating system
US-10731872-B2 · Aug 4, 2020 · US
Common venting system for water heaters and method of controlling the same
US-10584874-B2 · Mar 10, 2020 · US
Combustion device and combustion device system including combustion device
US-10539338-B2 · Jan 21, 2020 · US
Water heating system
US-10337763-B2 · Jul 2, 2019 · US
Combined heating system capable of bi-directional heating
US-10309660-B2 · Jun 4, 2019 · US
Low pressure drop water heating system
US-10260774-B2 · Apr 16, 2019 · US
On-demand tankless high volume capable water heating system
US-2018363925-A1 · Dec 20, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24D2200/043?
- CPC F24D2200/043 is the Cooperative Patent Classification code for “More than one gas or oil fired boiler.”
- How many patents are filed under CPC F24D2200/043 (More than one gas or oil fired boiler)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F24D2200/043 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).