D21H 17/46
Obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Official title: obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D21H17/46 (Obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds) appears on 1,378 US grants and 1,023 published applications in this corpus.
Search patents in D21H- Granted patents
- 1,378
- Published applications
- 1,023
- Assignees
- 593
- Inventors
- 2,816
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 36 | 0 |
| 1977 | 31 | 0 |
| 1978 | 22 | 0 |
| 1979 | 16 | 0 |
| 1980 | 21 | 0 |
| 1981 | 30 | 0 |
| 1982 | 16 | 0 |
| 1983 | 24 | 0 |
| 1984 | 21 | 0 |
| 1985 | 23 | 0 |
| 1986 | 22 | 0 |
| 1987 | 15 | 0 |
| 1988 | 16 | 0 |
| 1989 | 17 | 0 |
| 1990 | 15 | 0 |
| 1991 | 17 | 0 |
| 1992 | 21 | 0 |
| 1993 | 18 | 0 |
| 1994 | 19 | 0 |
| 1995 | 26 | 0 |
| 1996 | 27 | 0 |
| 1997 | 38 | 0 |
| 1998 | 39 | 0 |
| 1999 | 48 | 0 |
| 2000 | 46 | 0 |
| 2001 | 50 | 12 |
| 2002 | 39 | 37 |
| 2003 | 32 | 50 |
| 2004 | 38 | 54 |
| 2005 | 23 | 36 |
| 2006 | 14 | 44 |
| 2007 | 21 | 44 |
| 2008 | 17 | 40 |
| 2009 | 15 | 38 |
| 2010 | 23 | 37 |
| 2011 | 29 | 40 |
| 2012 | 21 | 36 |
| 2013 | 30 | 40 |
| 2014 | 40 | 38 |
| 2015 | 30 | 88 |
| 2016 | 41 | 35 |
| 2017 | 49 | 38 |
| 2018 | 30 | 37 |
| 2019 | 32 | 39 |
| 2020 | 34 | 41 |
| 2021 | 40 | 38 |
| 2022 | 20 | 28 |
| 2023 | 20 | 30 |
| 2024 | 28 | 45 |
| 2025 | 20 | 25 |
| 2026 | 18 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21H 17/54Obtained by reactions forming in the main chain of the macromolecule a760
- D21H 17/47Condensation polymers of aldehydes or ketones279
- D21H 17/53Polyethers225
- D21H 17/59Obtained by reactions forming in the main chain of the macromolecule a173
- D21H 17/52Epoxy resins99
- D21H 17/58Obtained by reactions forming in the main chain of the macromolecule a15
Recent patents
- Impregnating coating layer for insulating sheetsand multilayer laminates15 Sep 2026US 12,734,766 B2Coveme S.P.A.
- Foam-assisted application of uncooked starch and dry strength agents to paper products8 Sep 2026US 12,729,486 B2Solenis Technologies, L.P.
- Methods for manufacturing laminate, impregnated decorative paper and laminate obtained thereby25 Aug 2026US 12,715,206 B2Unilin BV
- Biopolymer composition and its use as a powder coating11 Aug 2026US 12,703,947 B2Brightplus Oy
- Method for producing wet-running friction paper28 Jul 2026US 12,692,663 B2Schaeffler Technologies AG & Co. KG
- Use of Polyurethane Elastomers Based on or Use of Kit-Of-Parts Comprising MDI-Polyadipate Prepolymers and Polyamine Chain-Extenders in Pulp and Paper Applications, Preferably in the Manufacture of Die Cutting Pads, Anvil Covers, Rollers and Zero Crush Wheels8 Oct 2026US 2026/0308850 A1Covestro Deutschland AG
- Polyimide fibre paper1 Oct 2026US 2026/0297851 A1Dupont Electronics, Inc.
- Method for Producing a Composite Material that is Free of Melamine-Formaldehyde Resin13 Aug 2026US 2026/0234869 A1Flooring Technologies Ltd.
- Composition13 Aug 2026US 2026/0234871 A1Daikin Industries, Ltd.
- Packing material and manufacturing method of packing material13 Aug 2026US 2026/0234872 A1Sony Group Corporation
Most cited
By later US patents
- End use applications of biodegradable polymers1,525US 5,444,113 AEcopol, LLC · 1995
- Blends of polyactic acid312US 5,216,050 ABioPak Technology, Ltd. · 1993
- Degradable polymer composition271US 5,502,158 AEcopol, LLC · 1996
- Binder coated discontinuous fibers with adhered particulate materials234US 5,432,000 AWeyerhaeuser Company · 1995
- Soft tissue paper231US 5,059,282 AThe Procter & Gamble Company · 1991