Expander system
US-11767784-B2 · Sep 26, 2023 · US
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Internal leakage control
Internal leakage control · 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 | F01C21/005 |
| Official title | {Internal leakage control} |
| Display label | Internal leakage control |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Expander system
US-2022213828-A1 · Jul 7, 2022 · US
Rotary actuator
US-9447785-B2 · Sep 20, 2016 · US