D21H 19/56
Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon
Official title: Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
D21H19/56 (Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon) appears on 676 US grants and 625 published applications in this corpus.
Search patents in D21H- Granted patents
- 676
- Published applications
- 625
- Assignees
- 385
- Inventors
- 1,790
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 13 | 0 |
| 1982 | 6 | 0 |
| 1983 | 12 | 0 |
| 1984 | 13 | 0 |
| 1985 | 10 | 0 |
| 1986 | 16 | 0 |
| 1987 | 10 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 15 | 0 |
| 1993 | 17 | 0 |
| 1994 | 24 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 16 | 0 |
| 1998 | 23 | 0 |
| 1999 | 19 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 4 |
| 2002 | 11 | 9 |
| 2003 | 9 | 21 |
| 2004 | 9 | 19 |
| 2005 | 10 | 19 |
| 2006 | 10 | 16 |
| 2007 | 4 | 13 |
| 2008 | 7 | 16 |
| 2009 | 7 | 17 |
| 2010 | 8 | 32 |
| 2011 | 7 | 22 |
| 2012 | 8 | 26 |
| 2013 | 13 | 21 |
| 2014 | 15 | 30 |
| 2015 | 17 | 20 |
| 2016 | 19 | 19 |
| 2017 | 18 | 39 |
| 2018 | 20 | 35 |
| 2019 | 17 | 31 |
| 2020 | 33 | 34 |
| 2021 | 23 | 28 |
| 2022 | 21 | 38 |
| 2023 | 19 | 28 |
| 2024 | 25 | 35 |
| 2025 | 17 | 29 |
| 2026 | 17 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas barrier film for packaging material25 Aug 2026US 12,715,668 B2Stora Enso OYJ
- Coated paper18 Aug 2026US 12,709,844 B2Koehler Innovation & Technology GmbH
- Multi-layer flexible packaging material19 May 2026US 12,630,346 B2Societe des Produits Nestle S. A.
- Hydrophilic cationic dispersion polymers for improved print quality and water fastness19 May 2026US 12,630,735 B2Ecolab USA Inc.
- Cellulosic structures for high barrier applications19 May 2026US 12,630,979 B2WestRock MWV, LLC
- Base paper for metallized paper, metallized paper, and packaging bag24 Sep 2026US 2026/0286609 A1Oji Holdings Corporation
- Coated barrier paper17 Sep 2026US 2026/0275641 A1Billerud Aktiebolag (publ)
- Barrier recycled paperboard and method for manufacturing thereof10 Sep 2026US 2026/0266001 A1WestRock MWV, LLC
- Layered structure27 Aug 2026US 2026/0249600 A1Camm Solutions (Spain) R&D, S.L.U.
- Polymer coated paper and paperboard27 Aug 2026US 2026/0250054 A1Stora Enso OYJ
Most cited
By later US patents
- Method of ink-jet recording103US 4,446,174 AFuiji Photo Film Company, Ltd. · 1984
- Composite fiberboard and process of manufacture95US 4,963,603 AArmstrong World Industries, Inc. · 1990
- Sequential emulsion polymerization process94US 4,325,856 AThe Dow Chemical Company · 1982
- Low viscosity, fast curing binder for cellulose90US 5,278,222 ARohm and Haas Company · 1994
- Acrylic emulsion copolymers for thickening aqueous systems and copolymerizable surfactant monomers for use therein84US 4,600,761 AAlco Chemical Corporation · 1986