Outrunner gas expansion motor topology
US-12031439-B2 · Jul 9, 2024 · US
Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60)
Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60) · 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 | F01C21/008 |
| Official title | {Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60)} |
| Display label | Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60) |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 7 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Outrunner gas expansion motor topology
US-2023366315-A1 · Nov 16, 2023 · US
Auxiliary power unit with intercooler
US-11584539-B2 · Feb 21, 2023 · US
Rotary engine
US-10954848-B2 · Mar 23, 2021 · US
Compressor having waste heat recovery with gas recycler
US-10829370-B2 · Nov 10, 2020 · US
Auxiliary power unit with intercooler
US-2020318547-A1 · Oct 8, 2020 · US
Rotary fluid pressure device with drive-in-drive valve arrangement
US-2020270993-A1 · Aug 27, 2020 · US
Auxiliary power unit with intercooler
US-10710738-B2 · Jul 14, 2020 · US
Scissor type compression and expansion machine used in a thermal energy recuperation system
US-10598050-B2 · Mar 24, 2020 · US
Compound engine assembly with cantilevered compressor and turbine
US-10598086-B2 · Mar 24, 2020 · US
Rotary fluid pressure device with drive-in-drive valve arrangement
US-10590771-B2 · Mar 17, 2020 · US
Actuator of link mechanism for internal combustion engine
US-10480402-B2 · Nov 19, 2019 · US
Scroll fluid machine with improved reliability and performance of components thereof
US-10415389-B2 · Sep 17, 2019 · US
Progressive cavity based control system
US-10407987-B2 · Sep 10, 2019 · US
Genset for top drive unit
US-10309166-B2 · Jun 4, 2019 · US
Mud motor coupling system
US-10288065-B1 · May 14, 2019 · US
Air compressor having supplemental power source
US-10161271-B2 · Dec 25, 2018 · US
Rotary engine
US-2018334955-A1 · Nov 22, 2018 · US
Actuator of link mechanism for internal combustion engine
US-2018223730-A1 · Aug 9, 2018 · US
Compound engine assembly with cantilevered compressor and turbine
US-2018179948-A1 · Jun 28, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01C21/008?
- CPC F01C21/008 is the Cooperative Patent Classification code for “Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60).”
- How many patents are filed under CPC F01C21/008 (Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines (brakes, couplings, transmissions per se F16, B60))?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F01C21/008 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2024 (latest complete years).