Piston pump and seal ring
US-11015595-B2 · May 25, 2021 · US
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Annular disc valves
Annular disc 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 | F04B53/128 |
| Official title | {Annular disc valves} |
| Display label | Annular disc valves |
| Total patents | 6 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reciprocating compressor
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Piston pump and seal ring
US-2019316582-A1 · Oct 17, 2019 · US
Reciprocating compressor
US-2018223822-A1 · Aug 9, 2018 · US
Portable pump capable of transmitting air pressure value via wireless transmission to mobile electronic device for indication
US-9587633-B2 · Mar 7, 2017 · US
Portable Pump Capable of Transmitting Air Pressure Value Via Wireless Transmission to Mobile Electronic Device for Indication
US-2015110645-A1 · Apr 23, 2015 · US