Process for the preparation of a polyamide
US-9850348-B2 · Dec 26, 2017 · US
Solid state polycondensation
Solid state polycondensation · 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 | C08G69/30 |
| Official title | Solid state polycondensation |
| Display label | Solid state polycondensation |
| Total patents | 110 |
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 | 11 |
| 2016 | 26 |
| 2017 | 23 |
| 2018 | 9 |
| 2019 | 3 |
| 2020 | 12 |
| 2021 | 4 |
| 2022 | 8 |
| 2023 | 7 |
| 2024 | 5 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyamide production method
US-9840587-B2 · Dec 12, 2017 · US
Polyamide resin and polyamide molded body using same
US-9796814-B2 · Oct 24, 2017 · US
Copolyamides with alternating repeat units
US-2017298181-A1 · Oct 19, 2017 · US
Xylylenediamine composition and method for producing polyamide resin
US-9783638-B2 · Oct 10, 2017 · US
Composite semipermeable membrane and method for producing the same, spiral wound separation membrane element
US-2017282129-A1 · Oct 5, 2017 · US
Xylylenediamine composition and method for producing polyamide resin
US-9777115-B2 · Oct 3, 2017 · US
Method for producing highly viscous polyamides
US-9738756-B2 · Aug 22, 2017 · US
Process for preparing nylon salt and its polymerization
US-2017218122-A1 · Aug 3, 2017 · US
Polyamide pellets, method for producing polyamide pellets, and method for producing polyamide molded article
US-2017210031-A1 · Jul 27, 2017 · US
Process for preparing a polyamide, a nylon salt to be used therein and a process for making the salt
US-2017210850-A1 · Jul 27, 2017 · US
Method for producing aliphatic or partially aromatic polyamides, said method comprising a solid-phase polymerization process
US-9701790-B2 · Jul 11, 2017 · US
Process for the preparation of a semi-crystalline semi-aromatic polyamide
US-2017152382-A1 · Jun 1, 2017 · US
Continuous solid-state polymerization device and method
US-9649617-B2 · May 16, 2017 · US
Continuous solid-state polymerisation device and method
US-9649616-B2 · May 16, 2017 · US
Xylylene diamine composition, and method for producing polyamide resin
US-9637594-B2 · May 2, 2017 · US
Polyamide resin composition
US-2017114185-A1 · Apr 27, 2017 · US
Copolymerized Polyamide Resin, Method for Preparing Same, and Molded Product Comprising Same
US-2017044318-A1 · Feb 16, 2017 · US
Xylylenediamine composition, and method for producing polyamide resin
US-9562144-B2 · Feb 7, 2017 · US
Thin-film electro devices based on derivatized poly (benzo-isimidazobenzophenanthroline) ladder polymers
US-9558892-B1 · Jan 31, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G69/30?
- CPC C08G69/30 is the Cooperative Patent Classification code for “Solid state polycondensation.”
- How many patents are filed under CPC C08G69/30 (Solid state polycondensation)?
- Our database includes 110 publications tagged with this CPC code.
- Is patent activity under CPC C08G69/30 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).