Photochemical reaction device
US-2016376712-A1 · Dec 29, 2016 · US
of the filter-press type
of the filter-press type · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C25B9/73 |
| Official title | of the filter-press type |
| Display label | of the filter-press type |
| Total patents | 800 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 38 |
| 2016 | 46 |
| 2017 | 62 |
| 2018 | 84 |
| 2019 | 119 |
| 2020 | 110 |
| 2021 | 93 |
| 2022 | 70 |
| 2023 | 48 |
| 2024 | 67 |
| 2025 | 55 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for operating an soec-type stack reactor for producing methane in the absence of available electricity
US-2016355932-A1 · Dec 8, 2016 · US
Artificial-photosynthesis array
US-2016281244-A1 · Sep 29, 2016 · US
Seal for an electrochemical device, process for manufacturing and fitting the seal and this device
US-2016285113-A1 · Sep 29, 2016 · US
Artificial-photosynthesis module
US-2016281242-A1 · Sep 29, 2016 · US
Hydrogen producing cell, hydrogen producing device, and energy system including the hydrogen producing device
US-9447509-B2 · Sep 20, 2016 · US
Artificial photosynthesis systems and methods for producing carbon-based chemical compounds
US-2016264920-A1 · Sep 15, 2016 · US
Extraction of carbon dioxide and hydrogen from seawater and hydrocarbon production therefrom
US-2016215403-A1 · Jul 28, 2016 · US
Method Of Generating Organic Compound And Organic Compound-Generating System
US-2016208396-A1 · Jul 21, 2016 · US
Method for fabricating single-crystalline niobium oxynitride film and method for generating hydrogen using single-crystalline niobium oxynitride film
US-2016201218-A1 · Jul 14, 2016 · US
Differential pressure water electrolysis apparatus
US-9365938-B2 · Jun 14, 2016 · US
Generation of high pressure oxygen via electrochemical pumping in a multi-stage electrolysis stack
US-9358501-B1 · Jun 7, 2016 · US
Bioelectrochemical system having polyvalent ion removing function
US-2016137536-A1 · May 19, 2016 · US
Membrane-electrode assembly for water electrolysis
US-2016115606-A1 · Apr 28, 2016 · US
Hydrogen-producing cell comprising a cell of a high temperature steam electrolyzer
US-9297086-B2 · Mar 29, 2016 · US
Water electrolysis system
US-2016068976-A1 · Mar 10, 2016 · US
Differential pressure water electrolysis system
US-2016060771-A1 · Mar 3, 2016 · US
Electrolytic cell having a laminated core of laminations which are stacked one on top of the other with recesses, and method for manufacturing and operating same
US-9273406-B2 · Mar 1, 2016 · US
Methods for producing combustible gas from the electrolysis of water (hte) or co-electrolysis with h2o/co2 in the same chamber, and associated catalytic reactor and system
US-2016053388-A1 · Feb 25, 2016 · US
Electrochemical reduction device and method for manufacturing hydride of aromatic compound
US-2016010224-A1 · Jan 14, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B9/73?
- CPC C25B9/73 is the Cooperative Patent Classification code for “of the filter-press type.”
- How many patents are filed under CPC C25B9/73 (of the filter-press type)?
- Our database includes 800 publications tagged with this CPC code.
- Is patent activity under CPC C25B9/73 growing?
- Publication counts under this code: 67 in 2024 vs 55 in 2025 (latest complete years).