Apparatus for washing and/or dewatering of cellulose pulp
US-9598818-B2 · Mar 21, 2017 · US
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Head boxes of cylinder machines
Head boxes of cylinder machines · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D21F1/04 |
| Official title | Head boxes of cylinder machines |
| Display label | Head boxes of cylinder machines |
| Total patents | 2 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
An apparatus for washing and/or dewaterng of cellulose pulp
US-2015361617-A1 · Dec 17, 2015 · US