Method for enriching burnt-sweet aroma note in yunnan flue-cured tobacco and aerosol-forming material
US-2026053181-A1 · Feb 26, 2026 · US
Recovery or refining of essential oils from raw materials
Recovery or refining of essential oils from raw materials · 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 | C11B9/02 |
| Official title | Recovery or refining of essential oils from raw materials |
| Display label | Recovery or refining of essential oils from raw materials |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 6 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compositions and methods relating to insecticides
US-12527329-B2 · Jan 20, 2026 · US
Methods to produce products comprising cannabinoids
US-12420214-B2 · Sep 23, 2025 · US
Biochemically produced sandalwood oil
US-12421535-B2 · Sep 23, 2025 · US
Methods to produce products comprising cannabinoids
US-2025269300-A1 · Aug 28, 2025 · US
Perfume concrete and absolute which are obtained by organic (poly)ol solvent extraction from solid natural substances
US-2025136891-A1 · May 1, 2025 · US
Antidepressant, Anti-Anxiety, Anti-Stress, or Tension-Relieving Composition Containing Fermented Perilla Frutescens Extract, and Use Thereof
US-2025057907-A1 · Feb 20, 2025 · US
Purified product of citrus oil and production method of purified product of citrus oil
US-2024350398-A1 · Oct 24, 2024 · US
Microwave assisted extraction of essential oils from plant biomass
US-2024336869-A1 · Oct 10, 2024 · US
Biochemically Produced Sandalwood Oil
US-2024287560-A1 · Aug 29, 2024 · US
Microwave assisted extraction of essential oils from plant biomass
US-12054692-B2 · Aug 6, 2024 · US
System and method for continuous thermal treatment of a flowable product
US-11882856-B2 · Jan 30, 2024 · US
Method for decolorizing essential oil
US-2023125108-A1 · Apr 27, 2023 · US
Eutectic extraction of solids
US-2022305401-A1 · Sep 29, 2022 · US
Compositions and methods relating to insecticides
US-2022174963-A1 · Jun 9, 2022 · US
Microwave assisted extraction of essential oils from plant biomass
US-2022175003-A1 · Jun 9, 2022 · US
Methods and composition for treating microbial infections
US-2022000765-A1 · Jan 6, 2022 · US
Olfactory signature and odorant mixture having the same
US-11062794-B2 · Jul 13, 2021 · US
System and method for continuous thermal treatment of a flowable product
US-2021000143-A1 · Jan 7, 2021 · US
Microwave assisted extraction of essential oils from plant biomass
US-2020347318-A1 · Nov 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C11B9/02?
- CPC C11B9/02 is the Cooperative Patent Classification code for “Recovery or refining of essential oils from raw materials.”
- How many patents are filed under CPC C11B9/02 (Recovery or refining of essential oils from raw materials)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC C11B9/02 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).