D21H 17/18
Forming new compounds in situ
Official title: forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with itself, or other added substances, e.g. by grafting on the fibres
D21H17/18 (Forming new compounds in situ) appears on 35 US grants and 27 published applications in this corpus.
Search patents in D21H- Granted patents
- 35
- Published applications
- 27
- Assignees
- 36
- Inventors
- 106
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 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 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 4 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 3 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 5 |
| 2023 | 1 | 5 |
| 2024 | 2 | 3 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Additive compositions for papermaking5 May 2026US 12,618,197 B2Solenis Technologies, L.P.
- Decay-resistant paper1 Oct 2024US 12,104,326 B2Nippon Beet Sugar Manufacturing Co., Ltd.
- Packing paper23 Apr 2024US 11,965,291 B2Mondi AG
- Surface sizing agent for papermaking14 Mar 2023US 11,603,630 B2Kurita Water Industries Ltd.
- Composition for sizing paper24 Dec 2019US 10,513,828 B2Kemira Chemie Ges.Mbh
- Method for producing insulation products based on mineral fibres or organic fibres of natural origin6 Feb 2025US 2025/0043514 A1
- Citric acid-catalysed curran modified card board materials2 Jan 2025US 2025/0003152 A1Cellucomp Limited
- Method for stabilisation, hydrophobation and enhanced durability treatment of renewable ligno-cellulosic materials and a resulting bio-based product28 Nov 2024US 2024/0391132 A1Fiberdom Oy
- Fibrous sterilizable material for packaging of medical devices and tray obtained from the material22 Aug 2024US 2024/0279877 A1Ahlstrom Oyj
- Composite Body15 Aug 2024US 2024/0271366 A1Seiko Epson Corporation
Most cited
By later US patents
- Crosslinkable creping adhesive formulations70US 5,961,782 AFort James Corporation · 1999
- Composite structural material and method with load bearing applications43US 4,467,728 AEllis Paperboard Products, Inc. · 1984
- Crosslinkable creping adhesive formulations40US 6,207,011 B1Fort James Corporation · 2001
- Transparent fibrous sheets20US 4,416,950 AAndrews Paper & Chemical Co., Inc. · 1983
- Radiation curable transparentizing resin systems, methods and products17US 4,237,185 AThe Richardson Company · 1980