D04H 1/4258
Regenerated cellulose series
D04H1/4258 (Regenerated cellulose series) appears on 258 US grants and 433 published applications in this corpus.
Search patents in D04H- Granted patents
- 258
- Published applications
- 433
- Assignees
- 225
- Inventors
- 951
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 8 |
| 2003 | 2 | 11 |
| 2004 | 4 | 18 |
| 2005 | 2 | 24 |
| 2006 | 4 | 18 |
| 2007 | 4 | 15 |
| 2008 | 4 | 12 |
| 2009 | 2 | 12 |
| 2010 | 10 | 10 |
| 2011 | 2 | 8 |
| 2012 | 6 | 7 |
| 2013 | 5 | 8 |
| 2014 | 4 | 8 |
| 2015 | 5 | 11 |
| 2016 | 6 | 17 |
| 2017 | 2 | 13 |
| 2018 | 10 | 19 |
| 2019 | 12 | 12 |
| 2020 | 8 | 39 |
| 2021 | 11 | 16 |
| 2022 | 14 | 32 |
| 2023 | 16 | 28 |
| 2024 | 14 | 32 |
| 2025 | 16 | 31 |
| 2026 | 12 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- 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
- Pouched products with heat sealable binder26 May 2026US 12,635,723 B2Nicoventures Trading Limited
- Flame-retardant and windproof wadding and preparation method thereof19 May 2026US 12,630,946 B2Beijing Jinlun Ward Technology Co., Ltd
- Cleaning Wipes1 Oct 2026US 2026/0297821 A1
- Hydroentangled nonwoven comprising cellulosic filaments17 Sep 2026US 2026/0275594 A1Essity Hygiene and Health Aktiebolag
- Fabrication of membranes via combined evaporation and precipitant induced phase separation10 Sep 2026US 2026/0264022 A1Sartorius Stedim Biotech GmbH
- Biodegradable nonwoven sheets, a method of manufacturing the same and uses thereof6 Aug 2026US 2026/0223788 A1
- Wiping Product and Method for Making Same6 Aug 2026US 2026/0224075 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- Method of making fibrous electrets241US 4,375,718 ASurgikos, Inc. · 1983
- Dispersible nonwoven fabric and method of making same166US 5,935,880 A1999
- Formaldhyde-free compositions for nonwovens113US 5,932,689 ARohm and Haas Company · 1999
- Non-woven sheet, manufacturing method thereof and absorbent article104US 9,095,477 B2Unicharm Corporation · 2015
- Skin application medicament95US 4,569,343 AFirma Carl Freudenberg · 1986