Process for the production of sulfur trioxide
US-10640376-B2 · May 5, 2020 · US
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the fire tubes being in upright arrangement
the fire tubes being in upright arrangement · 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 | F22B9/04 |
| Official title | the fire tubes being in upright arrangement |
| Display label | the fire tubes being in upright arrangement |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 1 |
| 2019 | 2 |
| 2020 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchangers with floating headers
US-10488122-B2 · Nov 26, 2019 · US
A process for the production of sulfur trioxide
US-2019177161-A1 · Jun 13, 2019 · US
Heat exchangers with floating headers
US-2017198987-A1 · Jul 13, 2017 · US
Heat exchangers with floating headers
US-9528777-B2 · Dec 27, 2016 · US
Electricity generation unit and cogeneration system
US-9500159-B2 · Nov 22, 2016 · US