D21F 1/0063
Perforated sheets
Official title: {Perforated sheets}
D21F1/0063 (Perforated sheets) appears on 72 US grants and 68 published applications in this corpus.
Search patents in D21F- Granted patents
- 72
- Published applications
- 68
- Assignees
- 27
- Inventors
- 110
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 3 |
| 2006 | 1 | 4 |
| 2007 | 0 | 5 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 5 |
| 2011 | 1 | 1 |
| 2012 | 1 | 3 |
| 2013 | 5 | 5 |
| 2014 | 6 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 4 |
| 2017 | 2 | 1 |
| 2018 | 3 | 5 |
| 2019 | 2 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 6 |
| 2022 | 2 | 2 |
| 2023 | 7 | 4 |
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Deflecting member for making fibrous structures21 Oct 2025US 12,448,732 B2The Procter & Gamble Company
- Manufacturing process for papermaking belts using 3D printing technology8 Jul 2025US 12,350,878 B2Structured I, LLC
- Composite laminated papermaking fabrics and methods of making the same20 Aug 2024US 12,065,784 B2First Quality Tissue, LLC
- Woven base fabric with laser energy absorbent MD and CD yarns and tissue product made using the same19 Mar 2024US 11,931,997 B2First Quality Tissue, LLC
- Method for producing a paper machine clothing24 Oct 2023US 11,795,618 B2Voith Patent GmbH
- Forming screen with unperforated longitudinal strips, a machine having the forming screen and method of producing a fibrous web18 Jun 2026US 2026/0168172 A1Voith Patent GmbH
- Manufacturing process for papermaking belts using 3d printing technology16 Oct 2025US 2025/0319649 A1Structured I, LLC
- Paper machine clothing and method of producing the same25 Sep 2025US 2025/0297426 A1Voith Patent GmbH
- Composite laminated papermaking fabrics and methods of making the same14 Nov 2024US 2024/0376669 A1First Quality Tissue, LLC
- Woven base fabric with laser energy absorbent md and cd yarns and tissue product made using the same6 Jun 2024US 2024/0181742 A1First Quality Tissue, LLC
Most cited
By later US patents
- Papermakers fabric of nonwoven layers in a laminated construction118US 4,541,895 AScapa Inc. · 1985
- Twin wire for an ATMOS system87US 7,744,726 B2Voith Patent GmbH · 2010
- Advanced dewatering system86US 7,931,781 B2Voith Patent GmbH · 2011
- Sheet assembly and method of manufacturing same83US 4,446,187 ANordiskafilt AB · 1984
- Industrial fabric for producing tissue and towel products, and method of making thereof81US 8,454,800 B2Albany International Corp. · 2013