Description
Class D21F : PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
Subclass 1/32: Wet end of machines for making continuous webs of paper Washing wire-cloths or felts
D21F 1/32
Sub-Class
Stats
- 83 US PATENTS IN FORCE
- 5 US APPLICATIONS PENDING
- 36 Total Patent Owners
- 319 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12258709 | Method for spraying chemical solution | May 17, 21 | Mar 25, 25 | Maintech Co. Ltd. |
| 12221748 | System and method for cleaning of belts and/or fabrics used on through air drying papermaking machines | Feb 22, 22 | Feb 11, 25 | FIRST QUALITY TISSUE, LLC |
| 12163286 | Systems and methods for cleaning composite laminated imprinting fabrics | Oct 19, 22 | Dec 10, 24 | FIRST QUALITY TISSUE, LLC |
| 12006632 | Monitoring system | Oct 01, 19 | Jun 11, 24 | Maintech Co. Ltd. |
| 11834788 | Crescent former for producing tissue paper | Aug 27, 21 | Dec 05, 23 | Valmet AB |
| 11725343 | Cleaning apparatus and fiber structure manufacturing apparatus | Mar 29, 22 | Aug 15, 23 | SEIKO EPSON CORPORATION |
| 11286617 | Machine for dewatering and drying a fibrous web | Dec 03, 18 | Mar 29, 22 | Voith Patent GmbH |
| 11203733 | Cleaning compositions and methods of cleaning equipment | Dec 13, 17 | Dec 21, 21 | Kemira Oyj |
| 11136717 | Drying section of a papermaking machine comprising one or more through air drying cylinders | Nov 19, 18 | Oct 05, 21 | Valmet Aktiebolag |
| 11041271 | Deposit detection in a paper making system via vibration analysis | Oct 24, 18 | Jun 22, 21 | Ecolab USA Inc. |
| 11008706 | Canvas cleaning device, canvas cleaning method and canvas cleaning mechanism | Mar 29, 19 | May 18, 21 | Maintech Co. Ltd. |
| 11008705 | Conveyance device and fibrous material recycling device | Nov 09, 18 | May 18, 21 | SEIKO EPSON CORPORATION |
| 10851330 | Method of improving paper machine fabric performance | Jul 27, 16 | Dec 01, 20 | Dubois Chemicals, Inc. |
| 10780465 | Apparatus for cleaning a felt in a system for producing a paper web | May 05, 17 | Sep 22, 20 | Not available |
| 10753045 | Systems and methods for providing force vector compensated fan nozzles | Jun 28, 18 | Aug 25, 20 | KADANT INC. |
| 10744545 | Process for cleaning a transport belt for manufacturing a paper web | Sep 26, 18 | Aug 18, 20 | GPCP IP Holdings LLC |
| 10604895 | Method of improving paper machine forming wire, felt and woven dryer belt performance by the application of peroxide containing solutions | Dec 05, 17 | Mar 31, 20 | Dubois Chemicals, Inc. |
| 10577744 | Fabric with contaminant resistant nanoparticle coating and method of in situ application | Feb 06, 17 | Mar 03, 20 | AstenJohnson Inc. |
| 10494765 | Monitoring system for monitoring the conditions of a band circulating in a paper making machine and paper making machine comprising said system | Jul 14, 15 | Dec 03, 19 | S.A. Giuseppe Cristini S.p.A. |
| 10487451 | Methods and compositions for cleaning paper machine fabrics | Apr 16, 18 | Nov 26, 19 | West End Products, LLC |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0426,055 | SHEET MANUFACTURING APPARATUS AND POWER SWITCHING DEVICE | Jun 20, 24 | Dec 26, 24 | Not available |
| 2024/0410,112 | SHEET MANUFACTURING APPARATUS AND CLEANING DEVICE | Jun 10, 24 | Dec 12, 24 | Not available |
| 2019/0276,984 | SYSTEMS AND METHODS FOR VARIABLE SHOWER WATER JET IMPINGEMENT FOR FABRIC CONDITIONING | Mar 07, 19 | Sep 12, 19 | Not available |
| 2019/0211,504 | CONTAMINATION-PREVENTING AGENT COMPOSITION AND CONTAMINATION PREVENTING METHOD | Sep 29, 16 | Jul 11, 19 | Not available |
| 2018/0119,349 | Cleaning Device | Apr 14, 16 | May 03, 18 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 32 Months (last 2 years Issuances)
- 32 Months (last 5 years Issuances)