Polyalphaolefins made from dimer olefins obtained from branched c10 monoolefins using solid acid catalyst
US-2025074844-A1 · Mar 6, 2025 · US
with ion-exchange resins
with ion-exchange resins · 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 | C07C2/28 |
| Official title | with ion-exchange resins |
| Display label | with ion-exchange resins |
| Total patents | 52 |
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 | 10 |
| 2016 | 8 |
| 2017 | 7 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dimerization and trimerization of C5 olefins via catalytic distillation
US-12162814-B2 · Dec 10, 2024 · US
Process for the controlled oligomerization of butenes
US-11939289-B2 · Mar 26, 2024 · US
Processes and systems for C3+ monoolefin conversion
US-11845707-B2 · Dec 19, 2023 · US
Process and apparatus for production and separation of alcohols and oligomerization of hydrocarbon feedstock
US-11649200-B2 · May 16, 2023 · US
Process for the controlled oligomerization of butenes
US-2023133823-A1 · May 4, 2023 · US
Olefin trimerization
US-11535577-B2 · Dec 27, 2022 · US
Process for oligomerization of isobutene
US-11512030-B2 · Nov 29, 2022 · US
Processes and Systems for C3+ Monoolefin Conversion
US-2022251003-A1 · Aug 11, 2022 · US
Olefin trimerization
US-2022144723-A1 · May 12, 2022 · US
Dimerization and trimerization of c5 olefins via catalytic distillation
US-2022127208-A1 · Apr 28, 2022 · US
Process for the controlled oligomerization of butenes
US-11312671-B2 · Apr 26, 2022 · US
Process and apparatus for production and separation of alcohols and oligomerization of hydrocarbon feedstock
US-2022073441-A1 · Mar 10, 2022 · US
Process for oligomerization of isobutene
US-2022073438-A1 · Mar 10, 2022 · US
Process for the controlled oligomerization of butenes
US-2021403398-A1 · Dec 30, 2021 · US
Production method for p-xylene
US-11208367-B2 · Dec 28, 2021 · US
Process for production of mixed butanol and diisobutenes as fuel blending components
US-11097998-B1 · Aug 24, 2021 · US
Method for producing p-xylene
US-11066343-B2 · Jul 20, 2021 · US
Production method for p-xylene
US-2021009488-A1 · Jan 14, 2021 · US
Production method for p-xylene
US-2021009487-A1 · Jan 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C2/28?
- CPC C07C2/28 is the Cooperative Patent Classification code for “with ion-exchange resins.”
- How many patents are filed under CPC C07C2/28 (with ion-exchange resins)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC C07C2/28 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).