Circular flying theater
US-2025032940-A1 · Jan 30, 2025 · US
Constructional features of auditoriums · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E04H3/30 |
| Official title | Constructional features of auditoriums |
| Display label | Constructional features of auditoriums |
| Total patents | 47 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 8 |
| 2017 | 11 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025032940-A1 · Jan 30, 2025 · US
US-11905716-B2 · Feb 20, 2024 · US
US-11885147-B2 · Jan 30, 2024 · US
US-11846116-B2 · Dec 19, 2023 · US
US-11578496-B2 · Feb 14, 2023 · US
US-11571632-B2 · Feb 7, 2023 · US
US-2023003041-A1 · Jan 5, 2023 · US
US-11466468-B2 · Oct 11, 2022 · US
US-2021222447-A1 · Jul 22, 2021 · US
US-11066840-B2 · Jul 20, 2021 · US
US-11058966-B2 · Jul 13, 2021 · US
US-11058965-B2 · Jul 13, 2021 · US
US-2021207391-A1 · Jul 8, 2021 · US
US-10907371-B2 · Feb 2, 2021 · US
US-2020324219-A1 · Oct 15, 2020 · US
US-2020324214-A1 · Oct 15, 2020 · US
US-2020324220-A1 · Oct 15, 2020 · US
US-2020080329-A1 · Mar 12, 2020 · US
US-2020011077-A1 · Jan 9, 2020 · US
US-10513861-B2 · Dec 24, 2019 · US
Answers are generated from the same data shown on this page.