D21H 23/12
By measuring properties of the formed web
Official title: by measuring properties of the formed web
D21H23/12 (By measuring properties of the formed web) appears on 11 US grants and 7 published applications in this corpus.
Search patents in D21H- Granted patents
- 11
- Published applications
- 7
- Assignees
- 10
- Inventors
- 22
- Latest grant
- 24 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for manufacturing an improved web material by the in-situ measurement and adjustment of ion concentration24 Nov 2020US 10,844,546 B2Eldorado Brasil Celulose S.A.
- Process for the in-situ adjustmen of ion concentrations during the manufacturing of web materials24 Nov 2020US 10,844,547 B2Eldorado Brasil Celulose S.A.
- Process for the production of paper and board10 Mar 2015US 8,974,637 B2Akzo Nobel Chemicals International B.V.
- Temporary wet strength system for tissue paper17 Jan 2012US 8,097,125 B2Kemira Chemicals, Inc.
- Use of colloidal PCC11 Sep 2007US 7,267,719 B2J. M. Huber Corporation
- Process for manufacturing an improved web material by the in-situ measurement and adjustment of ion concentration17 Oct 2019US 2019/0315084 A1Eldorado Brasil Celulose S.A.
- Process for the in-situ adjustmen of ion concentrations during the manufacturing of web materials17 Oct 2019US 2019/0316297 A1Eldorado Brasil Celulose S.A.
- Process for the production of paper and board25 Jun 2015US 2015/0176209 A1Akzo Nobel Chemicals International B.V.
- Process for the production of paper and board8 May 2014US 2014/0124154 A1Akzo Nobel Chemicals International B.V.
- Temporary wet strength system for tissue paper7 May 2009US 2009/0114357 A1Kemira Oyj
Most cited
By later US patents
- Method and equipment for controlling properties of paper66US 6,319,362 B1Metso Paper Automation Oy · 2001
- Method for controlling the permeability of a paper39US 5,888,348 ASchweitzer-Mauduit International, Inc. · 1999
- Method and equipment for controlling properties of paper12US 6,328,851 B1Metso Paper Automation Oy · 2001
- Synthetic mineral microparticles9US 5,989,714 AMinerals Technologies Inc. · 1999
- Process for controlling the addition of retention aids in papermaking6US 4,952,280 ABASF SE · 1990