Description
Class D21F : PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
Subclass 1/18: Wet end of machines for making continuous webs of paper Shaking-apparatus for wire-cloths and associated parts
D21F 1/18
Sub-Class
Stats
- 11 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 6 Total Patent Owners
- 59 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 |
| 10213808 | Shaking unit and method for the pneumatic excitation of a shaking unit | Mar 09, 15 | Feb 26, 19 | Voith Patent GmbH |
| 9284685 | Foil apparatus for paper making machine | Dec 19, 14 | Mar 15, 16 | COLDWATER SEALS, INC. |
| RE43679 | Adjustable activity drainage box | Jul 18, 11 | Sep 25, 12 | ASTENJOHNSON, INC. |
| 7754052 | Process and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels | Nov 01, 06 | Jul 13, 10 | UNITED STATES GYPSUM COMPANY |
| 7597779 | Shake mechanism for glass mat production line | May 09, 06 | Oct 06, 09 | BUILDING MATERIALS INVESTMENT CORPORATION |
| 7520963 | Equipment for moving the roll of a paper machine | Dec 15, 04 | Apr 21, 09 | VALMET TECHNOLOGIES, INC. |
| 6780286 | Adjustable activity drainage box | Jul 22, 02 | Aug 24, 04 | ASTENJOHNSON, INC. |
| 6605186 | Headbox for gypsum/fiber board production | May 17, 02 | Aug 12, 03 | UNITED STATES GYPSUM COMPANY |
| 6413376 | Headbox for gypsum/fiber board production | May 16, 00 | Jul 02, 02 | UNITED STATES GYPSUM COMPANY |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 28 Months (last 2 years Issuances)
- 28 Months (last 5 years Issuances)