Graphene transfer system using heat treatment module and graphene transfer method using same
US-2024400396-A1 · Dec 5, 2024 · US
obtained by optical microscopy
obtained by optical microscopy · 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 | C01P2004/02 |
| Official title | obtained by optical microscopy |
| Display label | obtained by optical microscopy |
| Total patents | 358 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 17 |
| 2017 | 22 |
| 2018 | 24 |
| 2019 | 42 |
| 2020 | 34 |
| 2021 | 47 |
| 2022 | 39 |
| 2023 | 37 |
| 2024 | 34 |
| 2025 | 39 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Surface modified carbon black to simultaneously improve rolling resistance, wet traction, and wear resistance
US-12116485-B2 · Oct 15, 2024 · US
Crystalline Sp-Sp2 Hybridized Carbon Allotropes through Dynamic Covalent Synthesis
US-2024286903-A1 · Aug 29, 2024 · US
Surface modified carbon black to simultaneously improve rolling resistance, wet traction, and wear resistance
US-2024263014-A1 · Aug 8, 2024 · US
Aerogels
US-2018251377-A1 · Sep 6, 2018 · US
Positive-electrode material for lithium ion secondary battery, method for producing the same, and lithium ion secondary battery
US-2017358799-A1 · Dec 14, 2017 · US
Crystalline boron nitride aerogels
US-9840414-B2 · Dec 12, 2017 · US
Production of rounded salt particles
US-2017341949-A1 · Nov 30, 2017 · US
High capacity cathode material with improved operating voltage
US-9825310-B2 · Nov 21, 2017 · US
Composite particles including a fluoropolymer, methods of making, and articles including the same
US-9815969-B2 · Nov 14, 2017 · US
Method for preparing particles of alkali metal bicarbonate
US-9815708-B2 · Nov 14, 2017 · US
Synthesis of quantum dot/polymer/layered-structure ceramic composite
US-9802396-B2 · Oct 31, 2017 · US
Pyrophosphate type material, process for preparing such a material and use for bone repair
US-2017304493-A1 · Oct 26, 2017 · US
Lithium ion conductive crystal body and all-solid state lithium ion secondary battery
US-2017309955-A1 · Oct 26, 2017 · US
Crystalline boron nitride aerogels
US-2017297915-A1 · Oct 19, 2017 · US
Composite particles including a fluoropolymer, methods of making, and articles including the same
US-9790347-B2 · Oct 17, 2017 · US
Tungsten Sulfide Thin Film and Preparation Method Therefor
US-2017275180-A1 · Sep 28, 2017 · US
Anisotropic magnetic flakes
US-2017271067-A1 · Sep 21, 2017 · US
Chiral nematic nanocrystalline metal oxides
US-9758386-B2 · Sep 12, 2017 · US
Method of producing product inorganic compound and product inorganic compound
US-2017252480-A1 · Sep 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01P2004/02?
- CPC C01P2004/02 is the Cooperative Patent Classification code for “obtained by optical microscopy.”
- How many patents are filed under CPC C01P2004/02 (obtained by optical microscopy)?
- Our database includes 358 publications tagged with this CPC code.
- Is patent activity under CPC C01P2004/02 growing?
- Publication counts under this code: 34 in 2024 vs 39 in 2025 (latest complete years).