Compressor systems for puncture repair kits
US-2026071618-A1 · Mar 12, 2026 · US
by adjusting the capacity of dead spaces of working chambers
by adjusting the capacity of dead spaces of working chambers · 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 | F04B49/16 |
| Official title | by adjusting the capacity of dead spaces of working chambers |
| Display label | by adjusting the capacity of dead spaces of working chambers |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and system for load control of reciprocating compressors
US-12442369-B2 · Oct 14, 2025 · US
Direct controlled variable displacement pumps with thermostatically controlled bypass
US-12435715-B2 · Oct 7, 2025 · US
Pressure sensitive stop stroke for variable displacement pumps
US-12429045-B2 · Sep 30, 2025 · US
Pump system, dialysis machine, and method of operating a pump
US-12357733-B2 · Jul 15, 2025 · US
Rotary swash plate hydraulic pump
US-2025207570-A1 · Jun 26, 2025 · US
Rotary swash plate hydraulic pump
US-2025207569-A1 · Jun 26, 2025 · US
Direct controlled variable displacement pumps with thermostatically controlled bypass
US-2024392775-A1 · Nov 28, 2024 · US
Pressure sensitive stop stroke for variable displacement pumps
US-2024392772-A1 · Nov 28, 2024 · US
Detergent supply apparatus or washing machine comprising same
US-2024376657-A1 · Nov 14, 2024 · US
Reciprocal compressor and refrigerator including the same
US-12129842-B2 · Oct 29, 2024 · US
Conveying Device
US-2024200542-A1 · Jun 20, 2024 · US
Bellows pump device
US-11920580-B2 · Mar 5, 2024 · US
Method and system for load control of reciprocating compressors
US-2024052827-A1 · Feb 15, 2024 · US
Method for operating a piston compressor, and piston compressor
US-11828281-B2 · Nov 28, 2023 · US
Reciprocal compressor and refrigerator including the same
US-2023220841-A1 · Jul 13, 2023 · US
Internal combustion engine system
US-11598248-B2 · Mar 7, 2023 · US
On-demand dual variable displacement positive displacement pumping system
US-2022372967-A1 · Nov 24, 2022 · US
Bellows pump device
US-2022341414-A1 · Oct 27, 2022 · US
Internal combustion engine system
US-2022154652-A1 · May 19, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B49/16?
- CPC F04B49/16 is the Cooperative Patent Classification code for “by adjusting the capacity of dead spaces of working chambers.”
- How many patents are filed under CPC F04B49/16 (by adjusting the capacity of dead spaces of working chambers)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC F04B49/16 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).