D21H 23/06
Controlling the addition
D21H23/06 (Controlling the addition) appears on 245 US grants and 145 published applications in this corpus.
Search patents in D21H- Granted patents
- 245
- Published applications
- 145
- Assignees
- 135
- Inventors
- 505
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 10 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 6 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 9 | 0 |
| 2002 | 11 | 9 |
| 2003 | 8 | 6 |
| 2004 | 5 | 8 |
| 2005 | 1 | 6 |
| 2006 | 3 | 4 |
| 2007 | 6 | 11 |
| 2008 | 1 | 5 |
| 2009 | 2 | 9 |
| 2010 | 2 | 8 |
| 2011 | 8 | 1 |
| 2012 | 4 | 5 |
| 2013 | 7 | 7 |
| 2014 | 5 | 4 |
| 2015 | 3 | 6 |
| 2016 | 5 | 5 |
| 2017 | 3 | 4 |
| 2018 | 5 | 8 |
| 2019 | 4 | 6 |
| 2020 | 9 | 6 |
| 2021 | 1 | 3 |
| 2022 | 5 | 3 |
| 2023 | 3 | 4 |
| 2024 | 2 | 10 |
| 2025 | 5 | 6 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing wet-running friction paper28 Jul 2026US 12,692,663 B2Schaeffler Technologies AG & Co. KG
- Softener concentrate, softener emulsion, method for producing softener emulsion and its use14 Jul 2026US 12,680,231 B2Kemira Oyj
- Process for producing coloured cardboard in a cardboard production apparatus, and coloured produced by such a process24 Jun 2025US 12,338,580 B2The Eska Company
- Glyoxylated starch additive for pulp products17 Jun 2025US 12,331,467 B2The Board of Trustees of Western Michigan University
- Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance11 Mar 2025US 12,247,354 B2Kurita Water Industries Ltd.
- A method for reducing the load of microbial contaminants in a pulp stock comprising a recycled fiber fraction16 Apr 2026US 2026/0103843 A1Stora Enso OYJ
- Glycoxylated Starch Additive for Pulp Products13 Nov 2025US 2025/0347056 A1The Board of Trustees of Western Michigan University
- System and method of real-time enzymatic activity detection and dynamic formulation for pulp and paper production24 Jul 2025US 2025/0237014 A1
- Methods and compositions for papermaking8 May 2025US 2025/0146224 A1Solenis Technologies, L.P.
- Strengthening agents and processes for making and using same6 Mar 2025US 2025/0075432 A1Ecolab USA Inc.
Most cited
By later US patents
- Production of paper and paperboard198US 4,753,710 AAllied Colloids Limited · 1988
- Soft tissue having temporary wet strength148US 6,149,769 AThe Procter & Gamble Company · 2000
- Highly loaded fiber-based composite material146US 5,731,080 AInternational Paper Company · 1998
- Production of paper and paper board121US 4,913,775 AAllied Colloids Limited · 1990
- Loaded paper116US 4,925,530 AThe Wiggins Teape Group Limited · 1990