Hydrothermal liquefaction of lignocellulosic biomass to bio-oils with controlled molecular weights
US-2020308500-A1 · Oct 1, 2020 · US
by distillation
by distillation · 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 | C07C37/74 |
| Official title | by distillation |
| Display label | by distillation |
| Total patents | 119 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 14 |
| 2018 | 13 |
| 2019 | 15 |
| 2020 | 12 |
| 2021 | 12 |
| 2022 | 14 |
| 2023 | 7 |
| 2024 | 8 |
| 2025 | 6 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods of Inhibiting Polymerization of Vinyl Aromatic Monomers
US-2019337877-A1 · Nov 7, 2019 · US
System for producing phenol and bisphenol A including removal unit for removing methanol and acetone
US-10457620-B2 · Oct 29, 2019 · US
Method of recovering phenol from a bpa production plant and the plant for recovering the same
US-2019322606-A1 · Oct 24, 2019 · US
Apparatus and method for preparing bisphenol A
US-10442746-B2 · Oct 15, 2019 · US
Method for producing alcohol compound
US-2019300465-A1 · Oct 3, 2019 · US
Process and apparatus for controlling the split of liquid reflux in a divided wall column
US-2019299116-A1 · Oct 3, 2019 · US
Method of recovering phenol from a BPA production plant and the plant for recovering the same
US-10407370-B2 · Sep 10, 2019 · US
Purification methods
US-10370320-B2 · Aug 6, 2019 · US
System for producing phenol and bisphenol a including removal unit for removing methanol and acetone
US-2019225567-A1 · Jul 25, 2019 · US
Method for recovering phenol and acetone from cracking reaction product of bisphenol-A residue
US-10358403-B2 · Jul 23, 2019 · US
Separation of dichlorophenols
US-10343965-B2 · Jul 9, 2019 · US
Purification methods
US-2019202767-A1 · Jul 4, 2019 · US
Process for making cyclohexanone
US-10252968-B2 · Apr 9, 2019 · US
Method of recovering phenol from a BPA production facility and the facility for recovering the same
US-10246391-B2 · Apr 2, 2019 · US
Process for making cyclohexanone
US-10233140-B2 · Mar 19, 2019 · US
Apparatus and method for preparing bisphenol a
US-2018312456-A1 · Nov 1, 2018 · US
METHOD FOR RECOVERING PHENOL AND ACETONE FROM CRACKING REACTION PRODUCT OF BISPHENOL-A RESIDUE (As Amended)
US-2018290954-A1 · Oct 11, 2018 · US
Process for Making Cyclohexanone
US-2018273457-A1 · Sep 27, 2018 · US
Method of recovering phenol from a bpa production facility and the facility for recovering the same
US-2018258020-A1 · Sep 13, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C37/74?
- CPC C07C37/74 is the Cooperative Patent Classification code for “by distillation.”
- How many patents are filed under CPC C07C37/74 (by distillation)?
- Our database includes 119 publications tagged with this CPC code.
- Is patent activity under CPC C07C37/74 growing?
- Publication counts under this code: 8 in 2024 vs 6 in 2025 (latest complete years).