Separation of cannabinoids from mixtures thereof by distillation
US-2023002340-A1 · Jan 5, 2023 · US
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pipe stills
pipe stills · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D3/04 |
| Official title | pipe stills |
| Display label | pipe stills |
| Total patents | 10 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 3 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus for purifying water
US-10870067-B2 · Dec 22, 2020 · US
Method and apparatus for purifying water
US-2020330897-A1 · Oct 22, 2020 · US
Urea process with high-temperature stripping
US-10781167-B2 · Sep 22, 2020 · US
Reflux condenser method
US-10471371-B2 · Nov 12, 2019 · US
Substrate processing method and substrate processing apparatus
US-2019279885-A1 · Sep 12, 2019 · US
A urea process with high-temperature stripping
US-2018362452-A1 · Dec 20, 2018 · US
Method and system for detecting coking growth and maldistribution in refinery equipment
US-9880035-B2 · Jan 30, 2018 · US
Reflux condenser
US-2017239590-A1 · Aug 24, 2017 · US
Method and system for detecting coking growth and maldistribution in refinery equipment
US-2015268078-A1 · Sep 24, 2015 · US