D21H 17/33
Synthetic macromolecular compounds
D21H17/33 (Synthetic macromolecular compounds) appears on 2,794 US grants and 2,186 published applications in this corpus.
Search patents in D21H- Granted patents
- 2,794
- Published applications
- 2,186
- Assignees
- 964
- Inventors
- 5,188
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 61 | 0 |
| 1977 | 49 | 0 |
| 1978 | 46 | 0 |
| 1979 | 32 | 0 |
| 1980 | 45 | 0 |
| 1981 | 53 | 0 |
| 1982 | 34 | 0 |
| 1983 | 47 | 0 |
| 1984 | 43 | 0 |
| 1985 | 49 | 0 |
| 1986 | 46 | 0 |
| 1987 | 27 | 0 |
| 1988 | 36 | 0 |
| 1989 | 48 | 0 |
| 1990 | 40 | 0 |
| 1991 | 42 | 0 |
| 1992 | 58 | 0 |
| 1993 | 50 | 0 |
| 1994 | 42 | 0 |
| 1995 | 47 | 0 |
| 1996 | 63 | 0 |
| 1997 | 62 | 0 |
| 1998 | 58 | 0 |
| 1999 | 68 | 0 |
| 2000 | 78 | 0 |
| 2001 | 88 | 15 |
| 2002 | 71 | 67 |
| 2003 | 51 | 92 |
| 2004 | 61 | 90 |
| 2005 | 36 | 74 |
| 2006 | 31 | 99 |
| 2007 | 42 | 85 |
| 2008 | 24 | 86 |
| 2009 | 31 | 78 |
| 2010 | 65 | 107 |
| 2011 | 75 | 84 |
| 2012 | 65 | 88 |
| 2013 | 77 | 93 |
| 2014 | 88 | 92 |
| 2015 | 58 | 142 |
| 2016 | 74 | 83 |
| 2017 | 90 | 99 |
| 2018 | 67 | 84 |
| 2019 | 68 | 84 |
| 2020 | 78 | 86 |
| 2021 | 71 | 92 |
| 2022 | 63 | 76 |
| 2023 | 53 | 86 |
| 2024 | 57 | 91 |
| 2025 | 49 | 60 |
| 2026 | 37 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of preparing aldehyde-functionalized polymers29 Sep 2026US 12,747,307 B2Ecolab USA Inc.
- 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
- Paper substrate for fibrous casing substrate8 Oct 2026US 2026/0308848 A1Nippon Paper Papylia Co., Ltd.
- 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
- Method for manufacturing paper-making filler using mixed solution of organic fiber and inorganic compound and use thereof1 Oct 2026US 2026/0297850 A1MarinePad Co., Ltd.
- Polyimide fibre paper1 Oct 2026US 2026/0297851 A1Dupont Electronics, Inc.
- Use of a paper substrate, the barrier-coated paper substrate, a laminated packaging material and packaging container comprising it17 Sep 2026US 2026/0275650 A1Tetra Laval Holdings & Finance S. A.
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
- Water absorbing agent285US 4,734,478 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1988
- Degradable polymer composition271US 5,502,158 AEcopol, LLC · 1996
- Binder coated discontinuous fibers with adhered particulate materials234US 5,432,000 AWeyerhaeuser Company · 1995