Flush toilet apparatus
US-2023313513-A1 · Oct 5, 2023 · US
Associated working of inlet and outlet valves
Associated working of inlet and outlet valves · Cooperative Patent Classification (CPC)
Building, mining, and civil engineering structures.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | E03D1/36 |
| Official title | Associated working of inlet and outlet valves |
| Display label | Associated working of inlet and outlet valves |
| Total patents | 88 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 19 |
| 2022 | 11 |
| 2023 | 11 |
| 2024 | 10 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electromagnetic distributor and toilet
US-2023167919-A1 · Jun 1, 2023 · US
Modular fluid valve
US-11643798-B2 · May 9, 2023 · US
Clean toilet and accessories
US-11542698-B2 · Jan 3, 2023 · US
Flush water tank apparatus and flush toilet apparatus equipped with same
US-11505933-B2 · Nov 22, 2022 · US
Flush toilet
US-11473282-B2 · Oct 18, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-11421409-B2 · Aug 23, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-11421410-B2 · Aug 23, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-11371229-B2 · Jun 28, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-11365535-B2 · Jun 21, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-11332917-B2 · May 17, 2022 · US
Clean toilet and accessories
US-2022127832-A9 · Apr 28, 2022 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-2022074180-A1 · Mar 10, 2022 · US
Clean toilet and accessories
US-11261592-B2 · Mar 1, 2022 · US
Flushometer system
US-2022025627-A1 · Jan 27, 2022 · US
Vacuum-assisted toilet systems and methods of using the same
US-2021404162-A1 · Dec 30, 2021 · US
Modular fluid valve
US-2021395988-A1 · Dec 23, 2021 · US
Clean toilet and accessories
US-2021388592-A1 · Dec 16, 2021 · US
Electromagnetic distributor and toilet
US-2021381619-A1 · Dec 9, 2021 · US
Flush water tank apparatus and flush toilet apparatus provided with the same
US-2021381214-A1 · Dec 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC E03D1/36?
- CPC E03D1/36 is the Cooperative Patent Classification code for “Associated working of inlet and outlet valves.”
- How many patents are filed under CPC E03D1/36 (Associated working of inlet and outlet valves)?
- Our database includes 88 publications tagged with this CPC code.
- Is patent activity under CPC E03D1/36 growing?
- Publication counts under this code: 10 in 2024 vs 10 in 2025 (latest complete years).