Modular getters and getters with different materials in vacuum enclosures
US-12592354-B2 · Mar 31, 2026 · US
Selection of specific absorption or adsorption materials
Selection of specific absorption or adsorption materials · 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 | F04B37/04 |
| Official title | Selection of specific absorption or adsorption materials |
| Display label | Selection of specific absorption or adsorption materials |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 1 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Evaporation pump
US-2025101571-A1 · Mar 27, 2025 · US
Hydrogen compression system
US-12258271-B2 · Mar 25, 2025 · US
Modular getters and getters with different materials in vacuum enclosures
US-2024290569-A1 · Aug 29, 2024 · US
Vacuum cell configured for reduced inner chamber helium permeation
US-11776797-B2 · Oct 3, 2023 · US
Hydrogen compression system
US-2023271826-A1 · Aug 31, 2023 · US
Vacuum cell configured for reduced inner chamber helium permeation
US-2022262609-A1 · Aug 18, 2022 · US
A turbomolecular pump, a vacuum pumping system and a method of evacuating a vacuum chamber
US-2022120282-A1 · Apr 21, 2022 · US
Method of designing a low-pressure chamber
US-11285470-B2 · Mar 29, 2022 · US
Hydrogen compressor with metal hydride
US-11204021-B2 · Dec 21, 2021 · US
Passive pumps for microfluidic devices
US-2021220822-A1 · Jul 22, 2021 · US
Sintered non-porous cathode and sputter ion vacuum pump containing the same
US-11056326-B2 · Jul 6, 2021 · US
Electrochemical hydrogen pump
US-10989184-B2 · Apr 27, 2021 · US
Cold-matter system having integrated pressure regulator
US-10975852-B2 · Apr 13, 2021 · US
Passive pumps for microfluidic devices
US-10946378-B2 · Mar 16, 2021 · US
Hydrogen compressor with metal hydride
US-2020332783-A1 · Oct 22, 2020 · US
Low-pressure chamber providing preset air pressure
US-2020206728-A1 · Jul 2, 2020 · US
Low-pressure chamber providing preset air pressure
US-10632459-B2 · Apr 28, 2020 · US
Ion trajectory manipulation architecture in an ion pump
US-10550829-B2 · Feb 4, 2020 · US
Electrochemical hydrogen pump
US-2020011313-A1 · Jan 9, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B37/04?
- CPC F04B37/04 is the Cooperative Patent Classification code for “Selection of specific absorption or adsorption materials.”
- How many patents are filed under CPC F04B37/04 (Selection of specific absorption or adsorption materials)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC F04B37/04 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).