Multi-box wing spar and skin
US-9527575-B2 · Dec 27, 2016 · US
Integral or sandwich constructions
Integral or sandwich constructions · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64C3/20 |
| Official title | Integral or sandwich constructions |
| Display label | Integral or sandwich constructions |
| Total patents | 470 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 39 |
| 2017 | 40 |
| 2018 | 37 |
| 2019 | 53 |
| 2020 | 53 |
| 2021 | 53 |
| 2022 | 53 |
| 2023 | 50 |
| 2024 | 36 |
| 2025 | 27 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanoreinforced films and laminates for aerospace structures
US-9511562-B2 · Dec 6, 2016 · US
Multi-functional composite structures
US-2016343467-A1 · Nov 24, 2016 · US
Method of forming composite structures
US-2016332392-A1 · Nov 17, 2016 · US
Aircraft component with closed box structure
US-2016332409-A1 · Nov 17, 2016 · US
Apparatus and methods for extending hybrid laminar flow control
US-9487288-B2 · Nov 8, 2016 · US
Passive load alleviation for aerodynamic lift structures
US-9481444-B2 · Nov 1, 2016 · US
Embedded tear straps in metal structures
US-2016311051-A1 · Oct 27, 2016 · US
Composite structure, aircraft wing and aircraft fuselage including composite structure, and method of manufacturing composite structure
US-9475568-B2 · Oct 25, 2016 · US
Stiffening structures, wing structures, and methods for manufacturing stiffening structures
US-2016304187-A1 · Oct 20, 2016 · US
Foam stiffened structure and method of making the same
US-2016303818-A1 · Oct 20, 2016 · US
Structural element for an aircraft and/or spacecraft and method for producing such a structural element
US-9458866-B2 · Oct 4, 2016 · US
Systems and methods for controlling a magnitude of a sonic boom
US-9446839-B2 · Sep 20, 2016 · US
Apparatuses and methods for creating layered tape composite structures
US-2016263877-A1 · Sep 15, 2016 · US
Thermoplastic truss structure for use in wing and rotor blade structures and methods for manufacture
US-2016257396-A1 · Sep 8, 2016 · US
Co-curing process for the joining of composite structures
US-2016257427-A1 · Sep 8, 2016 · US
Bonded and tailorable composite assembly
US-9415858-B2 · Aug 16, 2016 · US
Wing panel for aircraft
US-9415855-B2 · Aug 16, 2016 · US
Laminate composite wing structures
US-2016207607-A1 · Jul 21, 2016 · US
Optimized Cross-Ply Orientation in Composite Laminates
US-2016200054-A1 · Jul 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C3/20?
- CPC B64C3/20 is the Cooperative Patent Classification code for “Integral or sandwich constructions.”
- How many patents are filed under CPC B64C3/20 (Integral or sandwich constructions)?
- Our database includes 470 publications tagged with this CPC code.
- Is patent activity under CPC B64C3/20 growing?
- Publication counts under this code: 36 in 2024 vs 27 in 2025 (latest complete years).