D21H 19/74
The substrate having an uneven surface
Official title: the substrate having an uneven surface, e.g. crêped or corrugated paper
D21H19/74 (The substrate having an uneven surface) appears on 39 US grants and 34 published applications in this corpus.
Search patents in D21H- Granted patents
- 39
- Published applications
- 34
- Assignees
- 25
- Inventors
- 110
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 3 |
| 2014 | 4 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 2 |
| 2018 | 3 | 3 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 2 |
| 2023 | 1 | 2 |
| 2024 | 0 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coated paper for use as packaging material15 Sep 2026US 12,735,844 B2Neenah Gessner GmbH
- Paperboard products with improved rigidity and moisture barrier properties22 Apr 2025US 12,281,442 B2Hoffmaster Group, Inc.
- Yankee dryer profiler and control29 Aug 2023US 11,739,479 B2
- Yankee dryer profiler and control9 Feb 2021US 10,914,037 B2
- Method for fabricating shaped paper products8 Sep 2020US 10,767,313 B2Golden Arrow Printing Technology (Kunshan) Co., Ltd.
- A release agent composition for papermaking, a release agent emulsion and preparation method and applications thereof9 Apr 2026US 2026/0098380 A1Ecolab USA Inc.
- Stretchable high-density paper19 Mar 2026US 2026/0078549 A1Billerud Aktiebolag (publ)
- Paperboard products with improved rigidity and moisture barrier properties16 Oct 2025US 2025/0320663 A1Hoffmaster Group, Inc.
- Stretchable packaging material30 Jan 2025US 2025/0033313 A1Neenah Gessner GmbH
- Coated paper for use as packaging material22 Aug 2024US 2024/0279876 A1Neenah Gessner GmbH
Most cited
By later US patents
- Decorative coverings and production methods therefore286US 5,354,596 A1994
- Multiply tissue paper156US 6,420,013 B1The Procter & Gamble Company · 2002
- Cloth-like base sheet and method for making the same144US 6,315,864 B2Kimberly-Clark Worldwide, Inc. · 2001
- Soft tissue paper having a polyhydroxy compound and lotion applied onto a surface thereof65US 7,972,475 B2The Procter & Gamble Company · 2011
- Polymer reinforced paper having improved cross-direction tear52US 5,690,787 AKimberly-Clark Worldwide, Inc. · 1997