Drain pump assembly for a washing machine appliance and methods of operating the same
US-10829885-B2 · Nov 10, 2020 · US
of draining
of draining · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D06F33/42 |
| Official title | of draining |
| Display label | of draining |
| Total patents | 198 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 15 |
| 2019 | 11 |
| 2020 | 18 |
| 2021 | 31 |
| 2022 | 17 |
| 2023 | 23 |
| 2024 | 29 |
| 2025 | 31 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device and method for treating laundry
US-2020340168-A1 · Oct 29, 2020 · US
Washing machine appliances and methods of pump operation
US-10801156-B2 · Oct 13, 2020 · US
Washing machine and method for controlling same
US-2020308749-A1 · Oct 1, 2020 · US
Drain pump driving apparatus and laundry treatment machine including the same
US-2020308754-A1 · Oct 1, 2020 · US
Method for operating a laundry treatment machine and laundry treatment machine
US-2020277719-A1 · Sep 3, 2020 · US
Laundry treating machine and control method for the same
US-2020248355-A1 · Aug 6, 2020 · US
Laundry treatment machine
US-2020232135-A1 · Jul 23, 2020 · US
Laundry treatment machine
US-2020232136-A1 · Jul 23, 2020 · US
Drain pump driving apparatus and laundry treatment machine including the same
US-10711387-B2 · Jul 14, 2020 · US
Method for drain standpipe height detection
US-2020217002-A1 · Jul 9, 2020 · US
Washing machine and method for controlling the same
US-10697103-B2 · Jun 30, 2020 · US
Washing machine and control method
US-2020157725-A1 · May 21, 2020 · US
Washing machine control method and washing machine
US-10604884-B2 · Mar 31, 2020 · US
Control method of a double-drum washing machine
US-10570545-B2 · Feb 25, 2020 · US
Drain pump assembly for a washing machine appliance and methods of operating the same
US-2020040512-A1 · Feb 6, 2020 · US
Drain pump assembly for a washing machine appliance and methods of operating the same
US-2020040511-A1 · Feb 6, 2020 · US
Washing machine appliances and methods of pump operation
US-2019376224-A1 · Dec 12, 2019 · US
Method of controlling washing machine
US-2019368099-A1 · Dec 5, 2019 · US
Clothing treatment device and control method therefor
US-2019352835-A1 · Nov 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D06F33/42?
- CPC D06F33/42 is the Cooperative Patent Classification code for “of draining.”
- How many patents are filed under CPC D06F33/42 (of draining)?
- Our database includes 198 publications tagged with this CPC code.
- Is patent activity under CPC D06F33/42 growing?
- Publication counts under this code: 29 in 2024 vs 31 in 2025 (latest complete years).