Description
Class D21D : TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
Subclass 1/24: Methods of beating or refining; Beaters of the Hollander type (knotter screens D21F) Methods of refining Jordans Jordan rolls
D21D 1/24
Sub-Class
Stats
- 5 US PATENTS IN FORCE
- 3 US APPLICATIONS PENDING
- 1 Total Patent Owners
- 13 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12241203 | Blade segment for refiner | Jun 07, 21 | Mar 04, 25 | VALMET TECHNOLOGIES OY |
| 12091819 | Arrangement and method for adjusting blade gap in refiner | Dec 08, 20 | Sep 17, 24 | VALMET TECHNOLOGIES OY |
| 11142869 | Blade segment for refiner | May 10, 18 | Oct 12, 21 | Valmet Technologies, Inc. |
| 10400393 | Refiner | Dec 23, 14 | Sep 03, 19 | Valmet AB |
| 9670615 | Conical rotor refiner plate element for counter-rotating refiner having curved bars and serrated leading sidewalls | Aug 03, 12 | Jun 06, 17 | ANDRITZ INC. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0263,395 | Refining Segment | Jan 29, 24 | Aug 08, 24 | Valmet Technologies, Inc. |
| 2023/0228,033 | Blade Segment for Refiner | Jun 02, 21 | Jul 20, 23 | VALMET TECHNOLOGIES OY |
| 2019/0078,259 | METHOD FOR PROCESSING WOOD FIBERS | Sep 11, 18 | Mar 14, 19 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 34 Months (last 2 years Issuances)
- 34 Months (last 5 years Issuances)