Maintaining oil pressure during cylinder deactivation operation
US-12264604-B2 · Apr 1, 2025 · US
of tappets
of tappets · 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 | F01M9/104 |
| Official title | {of tappets} |
| Display label | of tappets |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 3 |
| 2022 | 6 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Maintaining oil pressure during cylinder deactivation operation
US-2022381166-A1 · Dec 1, 2022 · US
Systems and methods for variable displacement engine oil flow
US-11492934-B1 · Nov 8, 2022 · US
Optimized tubular structure
US-11359522-B2 · Jun 14, 2022 · US
Sliding member
US-11300013-B2 · Apr 12, 2022 · US
Fuel injection system and controller for fuel injection system
US-11261820-B2 · Mar 1, 2022 · US
Sliding member
US-2022042425-A1 · Feb 10, 2022 · US
Adapter for roller tappet of engine and engine roller tappet assembly including same
US-10975736-B2 · Apr 13, 2021 · US
Cam follower roller device
US-10962099-B2 · Mar 30, 2021 · US
Fuel injection system and controller for fuel injection system
US-2021033043-A1 · Feb 4, 2021 · US
Tappet
US-10876441-B2 · Dec 29, 2020 · US
Optimized tubular structure
US-2020400042-A1 · Dec 24, 2020 · US
Linear-guided valve bridge for an internal combustion engine
US-10858962-B2 · Dec 8, 2020 · US
Tappet
US-10794236-B2 · Oct 6, 2020 · US
Tappet
US-2020232351-A1 · Jul 23, 2020 · US
Cam follower roller device with lubricant supply holes and lubricating method
US-10718240-B2 · Jul 21, 2020 · US
Engine device
US-10612425-B2 · Apr 7, 2020 · US
Tappet
US-2020025045-A1 · Jan 23, 2020 · US
Engine valve lifter
US-10494960-B2 · Dec 3, 2019 · US
Adapter for roller tappet of engine and engine roller tappet assembly including same
US-2019353057-A1 · Nov 21, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01M9/104?
- CPC F01M9/104 is the Cooperative Patent Classification code for “of tappets.”
- How many patents are filed under CPC F01M9/104 (of tappets)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F01M9/104 growing?
- Publication counts under this code: 6 in 2022 vs 1 in 2025 (latest complete years).