D21H 5/00
Special paper or cardboard not otherwise provided for
Official title: {Special paper or cardboard not otherwise provided for (duplicating or recording paper B41M)}
D21H5/00 (Special paper or cardboard not otherwise provided for) appears on 671 US grants and 181 published applications in this corpus.
Search patents in D21H- Granted patents
- 671
- Published applications
- 181
- Assignees
- 327
- Inventors
- 1,027
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 52 | 0 |
| 1977 | 44 | 0 |
| 1978 | 35 | 0 |
| 1979 | 21 | 0 |
| 1980 | 30 | 0 |
| 1981 | 42 | 0 |
| 1982 | 46 | 0 |
| 1983 | 49 | 0 |
| 1984 | 36 | 0 |
| 1985 | 43 | 0 |
| 1986 | 27 | 0 |
| 1987 | 33 | 0 |
| 1988 | 28 | 0 |
| 1989 | 28 | 0 |
| 1990 | 15 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 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 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 5 |
| 2012 | 2 | 3 |
| 2013 | 2 | 9 |
| 2014 | 6 | 11 |
| 2015 | 9 | 6 |
| 2016 | 9 | 19 |
| 2017 | 7 | 10 |
| 2018 | 8 | 13 |
| 2019 | 11 | 9 |
| 2020 | 10 | 20 |
| 2021 | 8 | 17 |
| 2022 | 18 | 17 |
| 2023 | 14 | 9 |
| 2024 | 17 | 13 |
| 2025 | 6 | 11 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21H 5/12Special paper or cardboard not otherwise provided for: characterised by the use240
- D21H 5/0005Processes or apparatus specially adapted for applying liquids or other fluent materials181
- D21H 5/26Special paper or cardboard manufactured by dry method96
- D21H 5/0002Flame-resistant papers43
- D21H 5/02Patterned paper29
- D21H 5/24Special paper or cardboard not otherwise provided for: having enhanced flexibility or28
- D21H 5/0085Paper for surface-protection and decorative purposes21
- D21H 5/008Special paper or cardboard not otherwise provided for: characterised by the use11
All 15 subgroupsShow fewer
- D21H 5/0072Anti-slip papers8
- D21H 5/0092Post-treated paper5
- D21H 5/22Fungicidal, bactericidal, insecticidal, disinfecting, antiseptic, or corrosion-inhibiting paper antistatic, antioxygenic paper4
- D21H 5/0077Transparent papers3
- D21H 5/0082Wall papers2
- D21H 5/0075Anti-friction, anti-abrasive or release paper1
- D21H 5/08Vegetable parchment0
Recent patents
- Sanitary tissue product rolls29 Sep 2026US 12,747,535 B2The Procter & Gamble Company
- Extensible paper and its use in the production of expanded slit packaging wrap and void fill products22 Sep 2026US 12,741,798 B2HexcelPack, LLC
- Fibrous structures comrpising discrete cells28 Jul 2026US 12,692,661 B2The Procter & Gamble Company
- Sheet manufacturing apparatus21 Jul 2026US 12,686,969 B2Seiko Epson Corporation
- Discrete cells forming distinct pillow regions7 Jul 2026US 12,674,282 B2The Procter & Gamble Company
- Discrete cells and emboss elements17 Sep 2026US 2026/0275645 A1The Procter & Gamble Company
- Method for preparing janus paper by mycelia and janus paper11 Jun 2026US 2026/0160021 A1Jilin Agricultural University
- Discrete cell arrangements7 May 2026US 2026/0125854 A1The Procter & Gamble Company
- Fiber-basfed microwavable bowls with selective spray coating15 Jan 2026US 2026/0015800 A1Footprint International, LLC
- Expanded Slit Sheet Cushioning Product with Novel Reduced-Dimension Slit Patterns11 Dec 2025US 2025/0376311 A1HexcelPack, LLC
Most cited
By later US patents
- Apparatus and process for treating web material162US 4,551,199 ACrown Zellerbach Corporation · 1985
- Asbestiform crystalline calcium sodium or lithium phosphate, preparation and compositions161US 4,346,028 AMonsanto Company · 1982
- 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
- Multiple layer formation process for creped tissue136US 4,166,001 AKimberly-Clark Corporation · 1979
- Relieved patterned marrying roll125US 4,483,728 AKimberly-Clark Corporation · 1984