D21H 17/62
Rosin
Official title: Rosin; Derivatives thereof
D21H17/62 (Rosin) appears on 122 US grants and 49 published applications in this corpus.
Search patents in D21H- Granted patents
- 122
- Published applications
- 49
- Assignees
- 69
- Inventors
- 270
- Latest grant
- 28 Feb 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 2 |
| 2002 | 8 | 0 |
| 2003 | 5 | 3 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 4 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 3 |
| 2017 | 3 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 5 |
| 2020 | 2 | 4 |
| 2021 | 3 | 2 |
| 2022 | 2 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 3 |
| 2025 | 0 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of producing hydrophobic paper28 Feb 2023US 11,591,753 B2Sca Forest Products AB
- Composition of matter in a post-refiner blend zone8 Nov 2022US 11,492,757 B2Eastman Chemical Company
- Polymer product for improving retention of hydrophobic internal sizing agents in manufacture of paper or board24 May 2022US 11,339,539 B2Kemira Oyj
- Board with improved compression strength3 Aug 2021US 11,077,648 B2Stora Enso OYJ
- Method for increasing dimensional stability of a paper or a board product16 Feb 2021US 10,920,375 B2Kemira Oyj
- Biowax emulsions as bio-based barrier coating dispersions13 Aug 2026US 2026/0234870 A1Kemira Oyj
- Coated paperboard19 Feb 2026US 2026/0049450 A1Billerud Aktiebolag (publ)
- Machine glazed paper and method for preparing the machine glazed paper11 Dec 2025US 2025/0376809 A1Billerud Aktiebolag (publ)
- Fluting or liner comprising nssc pulp18 Jul 2024US 2024/0240403 A1Stora Enso OYJ
- Polymer dispersion, its use and method for its manufacture13 Jun 2024US 2024/0191013 A1Kemira Oyj
Most cited
By later US patents
- High mineral composite fine paper81US 4,445,970 APenntech Papers, Inc. · 1984
- Decor sheet and decorative laminates prepared therefrom79US 5,601,930 AThe Mead Corporation · 1997
- Aqueous emulsion coating for individual fibers of a cellulosic sheet providing improved wet strength76US 4,714,727 AH. B. Fuller Company · 1987
- Aqueous sizing compositions75US 4,522,686 AHercules Incorporated · 1985
- Stable rosin dispersions42US 3,966,654 AHercules Incorporated · 1976