Description
Class D21F : PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
Subclass 1/20: Wet end of machines for making continuous webs of paper Shaking-apparatus for wire-cloths and associated parts in Fourdrinier machines
D21F 1/20
Sub-Class
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 2 Total Patent Owners
- 24 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12146264 | Paper products having increased bending stiffness and cross-direction strength and methods for making the same | Sep 12, 22 | Nov 19, 24 | International Paper Company |
| 11441268 | Paper products having increased bending stiffness and cross-direction strength and methods for making the same | Jan 04, 19 | Sep 13, 22 | International Paper Company |
| 8974639 | Angle and height control mechanisms in fourdrinier forming processes and machines | Jul 01, 13 | Mar 10, 15 | IBS OF AMERICA |
| 7520963 | Equipment for moving the roll of a paper machine | Dec 15, 04 | Apr 21, 09 | VALMET TECHNOLOGIES, INC. |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 35 Months (last 2 years Issuances)
- 35 Months (last 5 years Issuances)