Hydrogen sensing device that can visually detect the presence of hydrogen through color change according to the water formation reaction
US-12455269-B2 · Oct 28, 2025 · US
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Platinum
Platinum · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B32B2311/06 |
| Official title | Platinum |
| Display label | Platinum |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Laser processing apparatus
US-12151312-B2 · Nov 26, 2024 · US
Hydrogen sensing device that can visually detect the presence of hydrogen through color change according to the water formation reaction
US-2024027414-A1 · Jan 25, 2024 · US
Laser processing apparatus
US-2023219169-A1 · Jul 13, 2023 · US
Holey graphene mesh and solvent-free manufacturing and composites thereof
US-11413850-B2 · Aug 16, 2022 · US
Metal-plated carbon material and manufacturing method thereof
US-11268194-B2 · Mar 8, 2022 · US
Laser processing apparatus
US-2021299790-A1 · Sep 30, 2021 · US
Article including at least one metal portion
US-11118061-B2 · Sep 14, 2021 · US
Holey Graphene Mesh and Solvent-Free Manufacturing and Composites Thereof
US-2021078287-A1 · Mar 18, 2021 · US
Holey graphene mesh and solvent-free manufacturing and composites thereof
US-10836137-B2 · Nov 17, 2020 · US
Metal-plated carbon material and manufacturing method thereof
US-2020308705-A1 · Oct 1, 2020 · US
Stretched catalyst layer having porous ionomer film and method of producing same
US-10734657-B2 · Aug 4, 2020 · US
Article including at least one metal portion
US-2020189234-A1 · Jun 18, 2020 · US
Method of releasing graphene from substrate
US-10369775-B2 · Aug 6, 2019 · US
Holey Graphene Mesh and Solvent-Free Manufacturing and Composites Thereof
US-2019022974-A1 · Jan 24, 2019 · US
Stretched catalyst layer having porous ionomer film and method of producing same
US-2018248198-A1 · Aug 30, 2018 · US
Method of releasing graphene from substrate
US-2018162115-A1 · Jun 14, 2018 · US