Method and device for purifying polybutylene terephthalate
US-10508177-B2 · Dec 17, 2019 · US
Purification; Drying
Purification; Drying · 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 | C08G63/90 |
| Official title | Purification; Drying |
| Display label | Purification; Drying |
| Total patents | 146 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 17 |
| 2017 | 12 |
| 2018 | 11 |
| 2019 | 17 |
| 2020 | 10 |
| 2021 | 16 |
| 2022 | 15 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 17 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for producing superabsorbent polymers
US-2019106532-A1 · Apr 11, 2019 · US
Method and device for purifying polybutylene terephthalate
US-2018371180-A1 · Dec 27, 2018 · US
Furanoate-based polyester and copolyester compositions using falling strand devolatilization
US-2018346662-A1 · Dec 6, 2018 · US
Continuous method for manufacturing a polyester from cyclic ester monomer
US-10066054-B2 · Sep 4, 2018 · US
Method for stabilizing a condensed phase composition including a cyclic ester in a process of manufacturing a polyester or of lactide
US-10059799-B2 · Aug 28, 2018 · US
Method for preparing polylactic acid
US-2018230266-A1 · Aug 16, 2018 · US
Long acting liraglutide compositions
US-2018221451-A1 · Aug 9, 2018 · US
Method for one-step synthesis of functional polyesters by organic catalysis
US-10040898-B2 · Aug 7, 2018 · US
Process for producing a lactic acid-glycolic acid copolymer or a salt thereof
US-10011681-B2 · Jul 3, 2018 · US
Catalyst for poly(lactide) synthesis and uses thereof
US-9988488-B2 · Jun 5, 2018 · US
Method for crystallization and separation of low-molecular components from a granulate of a crystallizable thermoplastic material and device therefor
US-2018118882-A1 · May 3, 2018 · US
Transparent polyester film with low visible light transmittance and high infrared-blocking rate and method for making the same
US-2018002501-A1 · Jan 4, 2018 · US
Method of making a poly(L-lactide) stent with tunable degradation rate
US-9844612-B2 · Dec 19, 2017 · US
Well-defined degradable poly(propylene fumarate) polymers and scalable methods for the synthesis thereof
US-2017355815-A1 · Dec 14, 2017 · US
Process for preparing a bio-resorbable polyester in the form of a powder
US-9790331-B2 · Oct 17, 2017 · US
Method of making a poly(l-lactide) stent with tunable degradation rate
US-2017252493-A1 · Sep 7, 2017 · US
A Continuous Method for Manufacturing a Polyester from Cyclic Ester Monomer
US-2017240697-A1 · Aug 24, 2017 · US
A Method for Stabilizing a Condensed Phase Composition Including a Cyclic Ester in a Process of Manufacturing a Polyester or of Lactide
US-2017240700-A1 · Aug 24, 2017 · US
Copolymers for 3D printing
US-9738752-B2 · Aug 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G63/90?
- CPC C08G63/90 is the Cooperative Patent Classification code for “Purification; Drying.”
- How many patents are filed under CPC C08G63/90 (Purification; Drying)?
- Our database includes 146 publications tagged with this CPC code.
- Is patent activity under CPC C08G63/90 growing?
- Publication counts under this code: 4 in 2024 vs 17 in 2025 (latest complete years).