Conversion of waste plastics to petrochemicals
US-2024010921-A1 · Jan 11, 2024 · US
Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80)
Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80) · 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 | B09B3/70 |
| Official title | Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80) |
| Display label | Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80) |
| Total patents | 440 |
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 | 28 |
| 2016 | 19 |
| 2017 | 26 |
| 2018 | 25 |
| 2019 | 31 |
| 2020 | 40 |
| 2021 | 23 |
| 2022 | 38 |
| 2023 | 66 |
| 2024 | 59 |
| 2025 | 64 |
| 2026 | 21 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing recycled pulp from used sanitary article
US-2017305037-A1 · Oct 26, 2017 · US
Method for recovering pulp fiber from used sanitary product and recycled pulp obtained thereby
US-2017284021-A1 · Oct 5, 2017 · US
Method for producing hematite for ironmaking
US-9776885-B2 · Oct 3, 2017 · US
Treatment of waste
US-9744575-B2 · Aug 29, 2017 · US
Apparatus and method for stripping solder metals during the recycling of waste electrical and electronic equipment
US-9731368-B2 · Aug 15, 2017 · US
Method for degrading biodegradable resin
US-2017218163-A1 · Aug 3, 2017 · US
Apparatus for producing organic substance from waste and method for producing organic substance from waste
US-2017175149-A1 · Jun 22, 2017 · US
Method for treating suspensions of solid particles in water using comb like polymers
US-2017166463-A1 · Jun 15, 2017 · US
Method for belching water from swollen superabsorbent polymers and method for recycling sanitary absorbent articles using the same
US-9650488-B2 · May 16, 2017 · US
Apparatus and method for stripping solder metals during the recycling of waste electrical and electronic equipment
US-9649712-B2 · May 16, 2017 · US
Treatment method for coal fly ash
US-2017113085-A1 · Apr 27, 2017 · US
A method for recovering alkali and aluminum in course of treatment of bayer red mud by using calcification-carbonation method
US-2017036920-A1 · Feb 9, 2017 · US
Systems for recovering rare earth elements
US-2016319396-A1 · Nov 3, 2016 · US
A method for degrading a plastic
US-2016280881-A1 · Sep 29, 2016 · US
Method of treating recyclable raw materials
US-9447479-B2 · Sep 20, 2016 · US
Method of detoxifying asbestos contained in waste slate and detoxified asbestos obtained through the same
US-9446273-B2 · Sep 20, 2016 · US
Method for recovering tungsten compound
US-9447478-B2 · Sep 20, 2016 · US
Method and system for separating rare earth elements
US-9435009-B2 · Sep 6, 2016 · US
Method for degrading biodegradable resin
US-2016229979-A1 · Aug 11, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B09B3/70?
- CPC B09B3/70 is the Cooperative Patent Classification code for “Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80).”
- How many patents are filed under CPC B09B3/70 (Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80))?
- Our database includes 440 publications tagged with this CPC code.
- Is patent activity under CPC B09B3/70 growing?
- Publication counts under this code: 59 in 2024 vs 64 in 2025 (latest complete years).