D04H 1/425
Cellulose series
D04H1/425 (Cellulose series) appears on 702 US grants and 1,094 published applications in this corpus.
Search patents in D04H- Granted patents
- 702
- Published applications
- 1,094
- Assignees
- 492
- Inventors
- 2,256
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 14 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 19 | 0 |
| 1998 | 19 | 0 |
| 1999 | 19 | 0 |
| 2000 | 14 | 0 |
| 2001 | 16 | 1 |
| 2002 | 9 | 16 |
| 2003 | 3 | 33 |
| 2004 | 8 | 36 |
| 2005 | 7 | 49 |
| 2006 | 12 | 41 |
| 2007 | 10 | 45 |
| 2008 | 10 | 25 |
| 2009 | 9 | 32 |
| 2010 | 22 | 28 |
| 2011 | 10 | 22 |
| 2012 | 14 | 22 |
| 2013 | 16 | 23 |
| 2014 | 13 | 23 |
| 2015 | 13 | 32 |
| 2016 | 18 | 47 |
| 2017 | 11 | 41 |
| 2018 | 24 | 46 |
| 2019 | 27 | 40 |
| 2020 | 24 | 79 |
| 2021 | 25 | 52 |
| 2022 | 45 | 73 |
| 2023 | 45 | 78 |
| 2024 | 47 | 79 |
| 2025 | 39 | 62 |
| 2026 | 28 | 69 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multilayer non-woven mat for lead acid batteries and applications therefor22 Sep 2026US 12,744,285 B2Johns Manville
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Honeycomb structure and method for manufacturing same18 Aug 2026US 12,709,829 B2Tohoku University
- Structured filter material for nicotine delivery products4 Aug 2026US 12,696,929 B2delfortgroup AG
- Non-woven fabric containing a disinfecting agent and method for producing the same4 Aug 2026US 12,698,457 B2Glatfelter Gernsbach GmbH
- Fiber article8 Oct 2026US 2026/0308825 A1Daicel Corporation
- Method for preparing non-woven fabric and non-woven fabric8 Oct 2026US 2026/0308826 A1Zhejiang Bsk New Material Co., Ltd.
- Method for producing fiber articles1 Oct 2026US 2026/0297819 A1Daicel Corporation
- Cleaning Wipes1 Oct 2026US 2026/0297821 A1
- Hydroentangled nonwoven comprising cellulosic filaments17 Sep 2026US 2026/0275594 A1Essity Hygiene and Health Aktiebolag
Most cited
By later US patents
- Process for making a soft, strong, absorbent material for use in absorbent articles1,412US 6,485,667 B1Rayonier Products and Financial Services Company · 2002
- High pulp content nonwoven composite fabric387US 5,284,703 AKimberly-Clark Corporation · 1994
- Dual-zoned absorbent webs287US 5,990,377 AKimberly-Clark Worldwide, Inc. · 1999
- Method of making fibrous electrets241US 4,375,718 ASurgikos, Inc. · 1983
- Binder coated discontinuous fibers with adhered particulate materials234US 5,432,000 AWeyerhaeuser Company · 1995