Method for making an organoaminosilane; a method for making a silylamine from the organoaminosilane
US-10875877-B2 · Dec 29, 2020 · US
Purification, separation
Purification, separation · 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 | C07F7/20 |
| Official title | Purification, separation |
| Display label | Purification, separation |
| Total patents | 108 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 2 |
| 2017 | 8 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 14 |
| 2021 | 11 |
| 2022 | 6 |
| 2023 | 10 |
| 2024 | 8 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing sioc-linked polyether siloxanes branched in the siloxane part
US-2020339612-A1 · Oct 29, 2020 · US
Process for preparing isocyanates containing alkoxysilane groups
US-10669293-B2 · Jun 2, 2020 · US
Process for preparing isocyanates containing alkoxysilane groups
US-10633401-B2 · Apr 28, 2020 · US
Process for preparing a colourless solution of 3-(N-benzyl-2-aminoethyl)aminopropyltrimethoxy-silane hydrochloride in methanol
US-10626130-B2 · Apr 21, 2020 · US
Process for separating aluminum chloride from silanes
US-10584136-B2 · Mar 10, 2020 · US
Continuous process for cleaning process waste air obtained in the production of silicones
US-10583390-B2 · Mar 10, 2020 · US
Stable Alkenyl Or Alkynyl-Containing Organosilicon Precursor Compositions
US-2020062787-A1 · Feb 27, 2020 · US
Method of stabilizing imino-functional silane
US-2020010490-A1 · Jan 9, 2020 · US
Purification method for purifying liquid, purification method for purifying silicon compound-containing liquid, method for producing silylating agent liquid, film forming material or diffusing agent composition, filter medium and filter device
US-10525418-B2 · Jan 7, 2020 · US
Method for making an organoaminosilane; a method for making a silylamine from the organoaminosilane
US-2019352315-A1 · Nov 21, 2019 · US
Method of stabilizing imino-functional silane
US-10457697-B2 · Oct 29, 2019 · US
Process for preparing isocyanates containing alkoxysilane groups
US-2019300549-A1 · Oct 3, 2019 · US
Process for preparing isocyanates containing alkoxysilane groups
US-2019300553-A1 · Oct 3, 2019 · US
Process for preparing isocyanates containing alkoxysilane groups
US-2019300550-A1 · Oct 3, 2019 · US
Hydrocarbyloxydisilanes
US-2019211039-A1 · Jul 11, 2019 · US
Process for preparing alkoxysilanes
US-10294251-B2 · May 21, 2019 · US
Process for preparing an acryloyloxysilane
US-10273254-B2 · Apr 30, 2019 · US
Polycyclic aminosilane compounds and making method
US-2019119308-A1 · Apr 25, 2019 · US
Polycyclic aminosilane compounds and making method
US-10266555-B1 · Apr 23, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07F7/20?
- CPC C07F7/20 is the Cooperative Patent Classification code for “Purification, separation.”
- How many patents are filed under CPC C07F7/20 (Purification, separation)?
- Our database includes 108 publications tagged with this CPC code.
- Is patent activity under CPC C07F7/20 growing?
- Publication counts under this code: 8 in 2024 vs 8 in 2025 (latest complete years).