Flame barrier material for a rechargeable electrical energy storage system
US-2023395281-A1 · Dec 7, 2023 · US
wood; paper; press board
wood; paper; press board · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01B3/52 |
| Official title | wood; paper; press board |
| Display label | wood; paper; press board |
| Total patents | 74 |
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 | 8 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 10 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Low-shedding aramid paper containing mica
US-11788234-B2 · Oct 17, 2023 · US
Aramid-based paper with improved properties
US-11686048-B2 · Jun 27, 2023 · US
Aramid-mica composite insulating nanopaper and preparation method thereof
US-2022316141-A1 · Oct 6, 2022 · US
Thermal barrier material for a rechargeable electrical energy storage system
US-2022262539-A1 · Aug 18, 2022 · US
Wire harness
US-2022181860-A1 · Jun 9, 2022 · US
Joining structure of different kinds of conductors, joining method of different kinds of conductors, and joint of power cables
US-2022172864-A1 · Jun 2, 2022 · US
Poly alpha-1,3-glucan fibrids and uses thereof and processes to make poly alpha-1,3-glucan fibrids
US-2022136173-A1 · May 5, 2022 · US
Aramid nanofiber-based insulation paper and preparation method thereof
US-11319675-B2 · May 3, 2022 · US
Reducing ageing of an insulation material of a winding, in particular of an oil-impregnated high-voltage device
US-2022076882-A1 · Mar 10, 2022 · US
Thermal insulating paper and method for producing a thermal insulating paper
US-2022025581-A1 · Jan 27, 2022 · US
Poly alpha-1,3-glucan fibrids and uses thereof and processes to make poly alpha-1,3-glucan fibrids
US-11118312-B2 · Sep 14, 2021 · US
Aramid paper suitable for use in electronic applications
US-11111632-B2 · Sep 7, 2021 · US
Aramid-based paper with improved properties
US-2021140108-A1 · May 13, 2021 · US
Aramid nanofiber-based insulation paper and preparation method thereof
US-2021062429-A1 · Mar 4, 2021 · US
Cellulose based electrically insulating material
US-10937562-B2 · Mar 2, 2021 · US
Separator for electrochemical elements and electrochemical element including separator for electrochemical elements
US-10818898-B2 · Oct 27, 2020 · US
Method of Diagnosing Oil-Immersed Electrical Apparatus
US-2020326364-A1 · Oct 15, 2020 · US
Conductive corona shielding paper, in particular for outer corona shielding
US-10736249-B2 · Aug 4, 2020 · US
Wet nonwoven fabric containing meta-aramid and polyphenylene sulfide and laminated sheet of the same
US-2020208351-A1 · Jul 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01B3/52?
- CPC H01B3/52 is the Cooperative Patent Classification code for “wood; paper; press board.”
- How many patents are filed under CPC H01B3/52 (wood; paper; press board)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC H01B3/52 growing?
- Publication counts under this code: 8 in 2024 vs 1 in 2025 (latest complete years).