Radiation thermal absorber based on characteristic absorption spectrum, and stirling engine and operation method thereof
US-10167812-B2 · Jan 1, 2019 · US
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Valves
Valves · 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 | F02G2270/90 |
| Official title | Valves |
| Display label | Valves |
| Total patents | 5 |
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 |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Slide valve for a waste heat recovery system
US-10119426-B2 · Nov 6, 2018 · US
Radiation thermal absorber based on characteristic absorption spectrum, and stirling engine and operation method thereof
US-2018038310-A1 · Feb 8, 2018 · US
Slide valve for a waste heat recovery system
US-2017167308-A1 · Jun 15, 2017 · US
Flow diode and method for controlling fluid flow origin of the invention
US-9169855-B1 · Oct 27, 2015 · US