Spring loaded pilot punch assembly
US-10821583-B2 · Nov 3, 2020 · US
with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00)
with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00) · 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 | F16B21/18 |
| Official title | with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00) |
| Display label | with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00) |
| Total patents | 141 |
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 | 5 |
| 2016 | 7 |
| 2017 | 17 |
| 2018 | 15 |
| 2019 | 8 |
| 2020 | 22 |
| 2021 | 16 |
| 2022 | 22 |
| 2023 | 12 |
| 2024 | 12 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spring steel sleeve design
US-2020340219-A1 · Oct 29, 2020 · US
Portable container and container assembly
US-10773852-B2 · Sep 15, 2020 · US
Expanding retention locking plug
US-2020224705-A1 · Jul 16, 2020 · US
Multi segment wind turbine blade joint bushing
US-2020224636-A1 · Jul 16, 2020 · US
System and method for axially retaining two coaxial shaft components
US-2020217370-A1 · Jul 9, 2020 · US
Operation handle and handle main body structure for operation handle
US-10697206-B2 · Jun 30, 2020 · US
Portable container and container assembly
US-10597191-B2 · Mar 24, 2020 · US
High-speed snap ring and snap ring retention method
US-10458479-B2 · Oct 29, 2019 · US
Retainer for rotating members
US-10378588-B2 · Aug 13, 2019 · US
Flat strain wave gearing
US-10352426-B2 · Jul 16, 2019 · US
Quick- disconnect fastening system
US-2019145452-A1 · May 16, 2019 · US
Constant velocity universal joint
US-2019128333-A1 · May 2, 2019 · US
Contoured retaining ring
US-10215037-B2 · Feb 26, 2019 · US
Quick-disconnect fastening system
US-10215213-B2 · Feb 26, 2019 · US
Pin and carrier locking assembly
US-2019024695-A1 · Jan 24, 2019 · US
High retention force serviceable plug-on joint assembly
US-2018320742-A1 · Nov 8, 2018 · US
Turbine assembly with auxiliary wheel
US-2018320523-A1 · Nov 8, 2018 · US
Body isolator and bolt retention assembly
US-10113581-B2 · Oct 30, 2018 · US
Joint assembly and a method of using the same
US-10100961-B2 · Oct 16, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16B21/18?
- CPC F16B21/18 is the Cooperative Patent Classification code for “with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00).”
- How many patents are filed under CPC F16B21/18 (with circlips or like resilient retaining devices, {i.e. resilient in the plane of the ring or the like}; Details (spring-washers for locking nuts F16B39/24; adjusting rings F16B43/00))?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC F16B21/18 growing?
- Publication counts under this code: 12 in 2024 vs 5 in 2025 (latest complete years).