Fastener
US-2025251013-A1 · Aug 7, 2025 · US
with spring washers fastened to the nut or bolt-head
with spring washers fastened to the nut or bolt-head · 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 | F16B39/26 |
| Official title | with spring washers fastened to the nut or bolt-head |
| Display label | with spring washers fastened to the nut or bolt-head |
| Total patents | 62 |
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 | 1 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 1 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nut fastener assembly
US-12135050-B2 · Nov 5, 2024 · US
Locking device, gimbal and gimbal system
US-12060967-B2 · Aug 13, 2024 · US
Modular screw and method of manufacturing a modular screw
US-12006961-B2 · Jun 11, 2024 · US
Illumination device
US-12007100-B2 · Jun 11, 2024 · US
Barrel nut retainer
US-11873855-B2 · Jan 16, 2024 · US
Actuator lock nut assembly
US-2023358267-A1 · Nov 9, 2023 · US
Composite Material and Fastening Nut Made of Composite Material
US-2023348695-A1 · Nov 2, 2023 · US
Compensating fastener assembly
US-11795991-B2 · Oct 24, 2023 · US
Box nut retainer
US-11692581-B2 · Jul 4, 2023 · US
Illumination device
US-2023143772-A1 · May 11, 2023 · US
Spring device for securing a threaded fastener of a bolted joint and a system for securing a bolted joint
US-2023135460-A1 · May 4, 2023 · US
Spacer assembly
US-11566649-B2 · Jan 31, 2023 · US
Bolt attachment
US-11560916-B2 · Jan 24, 2023 · US
Spring washer for a variable flow rate valve mechanism
US-11519290-B2 · Dec 6, 2022 · US
Spring mechanisms for display enclosures
US-11490530-B2 · Nov 1, 2022 · US
Fastening arrangement with damping effect and component connection to the fastening arrangement
US-11466714-B2 · Oct 11, 2022 · US
Modular screw and method of manufacturing a modular screw
US-2022260105-A1 · Aug 18, 2022 · US
Fastening arrangement with damping effect and component connection to the fastening arrangement
US-2022145918-A1 · May 12, 2022 · US
Damping arrangement, component with damping arrangement as well as corresponding component connection, a manufacturing method and a connecting method
US-2022136541-A1 · May 5, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16B39/26?
- CPC F16B39/26 is the Cooperative Patent Classification code for “with spring washers fastened to the nut or bolt-head.”
- How many patents are filed under CPC F16B39/26 (with spring washers fastened to the nut or bolt-head)?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC F16B39/26 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).