D21H 5/2607
Pretreatment and individualisation of the fibres, formation of the mixture fibres-gas and
Official title: {Pretreatment and individualisation of the fibres, formation of the mixture fibres-gas and laying the fibres on a forming surface (manufacture of a pulp sheet or dewatered pulp D21C9/185)}
D21H5/2607 (Pretreatment and individualisation of the fibres, formation of the mixture fibres-gas and) appears on 32 US grants and 4 published applications in this corpus.
Search patents in D21H- Granted patents
- 32
- Published applications
- 4
- Assignees
- 11
- Inventors
- 40
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
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| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
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| 1994 | 0 | 0 |
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| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sheet manufacturing apparatus21 Jul 2026US 12,686,969 B2Seiko Epson Corporation
- Sheet manufacturing apparatus9 Feb 2021US 10,914,034 B2Seiko Epson Corporation
- Sheet manufacturing apparatus24 Apr 2018US 9,951,473 B2Seiko Epson Corporation
- Sheet manufacturing apparatus and sheet manufacturing method17 Oct 2017US 9,790,642 B2Seiko Epson Corporation
- Apparatus for the production of elastic absorbent5 Jun 1990US 4,931,005 AShowa Denko K. K.
- Sheet manufacturing apparatus23 May 2024US 2024/0167223 A1Seiko Epson Corporation
- Sheet manufacturing apparatus28 Mar 2019US 2019/0093286 A1Seiko Epson Corporation
- Sheet manufacturing apparatus23 Nov 2017US 2017/0335516 A1Seiko Epson Corporation
- Sheet manufacturing apparatus and sheet manufacturing method11 Aug 2016US 2016/0230338 A1Seiko Epson Corporation
Most cited
By later US patents
- Adsorptive nonwoven fabric comprising fused fibers, non-fused fibers and absorptive material and method of making same154US 4,160,059 AHonshu Seishi Kabushiki Kaisha · 1979
- Liquid absorbent fibrous material and method of making the same77US 4,082,886 AJohnson & Johnson · 1978
- Nonwoven fabric75US 4,018,646 AJohnson & Johnson · 1977
- Fiber/absorbent polymer composites and method of forming same70US 4,354,487 AJohnson & Johnson · 1982
- Fibrous material and method of making the same68US 4,129,132 AJohnson & Johnson · 1978