Description
Class D21F : PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
Subclass 1/08: Wet end of machines for making continuous webs of paper Regulating consistency
D21F 1/08
Sub-Class
Stats
- 22 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 16 Total Patent Owners
- 117 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11859346 | Formed body producing method | Jun 27, 22 | Jan 02, 24 | SEIKO EPSON CORPORATION |
| 9347182 | Methods and apparatus for forming fluff pulp sheets | Oct 02, 14 | May 24, 16 | INTERNATIONAL PAPER COMPANY |
| 8871059 | Methods and apparatus for forming fluff pulp sheets | Feb 16, 12 | Oct 28, 14 | INTERNATIONAL PAPER COMPANY |
| 8753482 | Method and apparatus for treatment of paper stock | Apr 30, 08 | Jun 17, 14 | HONEYWELL INTERNATIONAL 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 |
| 7279072 | Method and apparatus for adjusting operation of wire section | Nov 11, 02 | Oct 09, 07 | METSO AUTOMATION OY |
| 6355142 | Method of controlling headbox jet velocity for foamed furnishes | Nov 16, 92 | Mar 12, 02 | GPCP IP HOLDINGS LLC, Fort James Corporation of Virginia, |
| 6328851 | Method and equipment for controlling properties of paper | Nov 17, 98 | Dec 11, 01 | METSO PAPER AUTOMATION OY, NELES AUTOMATION OY, |
| 6203667 | Method for regulating basis weight of paper or board in a paper or board machine | Jun 10, 99 | Mar 20, 01 | METSO PAPER AUTOMATION OY, VALMET TECHNOLOGIES, INC., |
| 6117272 | Device and process for metering auxiliary materials into the flow box of a paper machine | Sep 03, 98 | Sep 12, 00 | Voith Sulzer Papiermaschinen GmbH |
| 6030500 | Arrangement for feeding stock to a headbox in a papermaking machine | Dec 28, 98 | Feb 29, 00 | VALMET AB |
| 5964984 | Method and apparatus for working up a sample of liquid | Dec 22, 97 | Oct 12, 99 | METSO AUTOMATION OY |
| 5954923 | Electromagnetic field perturbation sensor and methods for measuring water content in sheetmaking systems | May 26, 98 | Sep 21, 99 | Honeywell-Measurex Corporation |
| 5944955 | Fast basis weight control for papermaking machine | Jan 15, 98 | Aug 31, 99 | Honeywell-Measurex Corporation |
| 5814191 | Arrangement and method for combining a dilution flow with a stock flow passed out of an inlet header in a paper/board machine | Jun 20, 97 | Sep 29, 98 | VALMET CORPORATION |
| 5812404 | Method for overall regulation of the headbox of a paper machine or equivalent | Apr 18, 96 | Sep 22, 98 | VALMET CORPORATION |
| 5800678 | Method and device for regulating a flow of dilution liquid in connection with a headbox of a paper/board machine | Dec 31, 96 | Sep 01, 98 | VALMET CORPORATION |
| 5792322 | Flow splitting device for web profile control stock dilution system | Dec 03, 96 | Aug 11, 98 | VALMET TECHNOLOGIES, INC. |
| 5707495 | Headbox for papermaking machine with more uniform flow | Jun 13, 96 | Jan 13, 98 | J. M. Voith GmbH |
| 5549793 | Control of dilution lines in a dilution headbox of a paper making machine | Aug 02, 94 | Aug 27, 96 | ABB INDUSTRIAL SYSTEMS INC. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2019/0218,715 | SYSTEM FOR COLLECTING AND DILUTING PULP FOR ANALYSIS | Jan 16, 19 | Jul 18, 19 | Not available |
Top Owners in This Subclass
| Upgrade to the Professional Level to view Top Owners for this Subclass.Learn More |
|---|
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)