Buoyant fastener structure
US-2020208674-A1 · Jul 2, 2020 · US
by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)
by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12) · 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 | F16B39/28 |
| Official title | by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12) |
| Display label | by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12) |
| Total patents | 139 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 18 |
| 2017 | 13 |
| 2018 | 10 |
| 2019 | 7 |
| 2020 | 16 |
| 2021 | 13 |
| 2022 | 12 |
| 2023 | 14 |
| 2024 | 11 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Stud locking tool
US-2020025236-A1 · Jan 23, 2020 · US
component assembly comprising a component and an element having a head part and a collar arranged at one side of the head part as well as manufacturing methods
US-2019338804-A1 · Nov 7, 2019 · US
Nut retention system
US-10465740-B2 · Nov 5, 2019 · US
Bumper fastening structure
US-2019322232-A1 · Oct 24, 2019 · US
Fastening insert for a component made of plastic, foam or composite material
US-2019316625-A1 · Oct 17, 2019 · US
Apparatus for preloading a bearing
US-10436247-B2 · Oct 8, 2019 · US
Wear resistant frame liner joint assembly for a gas turbine engine
US-10323847-B2 · Jun 18, 2019 · US
Retaining element
US-10172496-B2 · Jan 8, 2019 · US
Fastening devices for explosion-proof enclosures
US-10100869-B2 · Oct 16, 2018 · US
Locking nut with a directional coupling mechanism
US-10047571-B2 · Aug 14, 2018 · US
Apparatus for preloading a bearing
US-2018223901-A1 · Aug 9, 2018 · US
Pivotal connection for heavy-duty vehicle suspension assembly
US-10017020-B2 · Jul 10, 2018 · US
Dampened fastener assembly
US-2018180074-A1 · Jun 28, 2018 · US
Nut retention system
US-2018135686-A1 · May 17, 2018 · US
Wheel assembly tie bolt retention system
US-9956817-B2 · May 1, 2018 · US
Alignment tie rod device and method of utilization
US-2018066697-A1 · Mar 8, 2018 · US
Apparatus for preloading a bearing
US-2018045244-A1 · Feb 15, 2018 · US
Intershaft integrated seal and lock-nut
US-9869198-B2 · Jan 16, 2018 · US
Method for preloading a bearing
US-9797441-B2 · Oct 24, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16B39/28?
- CPC F16B39/28 is the Cooperative Patent Classification code for “by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12).”
- How many patents are filed under CPC F16B39/28 (by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12))?
- Our database includes 139 publications tagged with this CPC code.
- Is patent activity under CPC F16B39/28 growing?
- Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).