D21F 5/181
On yankee cylinder
Official title: {on Yankee cylinder}
D21F5/181 (On yankee cylinder) appears on 103 US grants and 126 published applications in this corpus.
Search patents in D21F- Granted patents
- 103
- Published applications
- 126
- Assignees
- 40
- Inventors
- 221
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 3 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 4 |
| 2008 | 4 | 3 |
| 2009 | 0 | 1 |
| 2010 | 5 | 3 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 4 |
| 2015 | 2 | 2 |
| 2016 | 4 | 6 |
| 2017 | 2 | 3 |
| 2018 | 3 | 15 |
| 2019 | 11 | 13 |
| 2020 | 15 | 11 |
| 2021 | 12 | 9 |
| 2022 | 7 | 9 |
| 2023 | 7 | 10 |
| 2024 | 5 | 8 |
| 2025 | 8 | 5 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fibrous structures4 Aug 2026US 12,698,594 B2The Procter & Gamble Company
- Method for applying coating chemicals to yankee dryers for tissue and towel production14 Jul 2026US 12,680,229 B2Ecolab USA Inc.
- Paper making machine and process14 Jul 2026US 12,680,230 B2Toscotec S.P.A.
- Through-air apparatus with a shroud30 Jun 2026US 12,668,923 B2Valmet Corporation
- Creping adhesive, powder for use as creping adhesive, method for producing creping adhesive, and toilet paper, tissue paper, paper towel, kitchen paper, or napkin base paper26 May 2026US 12,637,596 B2Kuraray Co., Ltd.
- Method for applying coating chemicals to yankee dryers for tissue and towel production1 Oct 2026US 2026/0297849 A1Ecolab USA Inc.
- Polyamidoamine-epihalohydrin yankee adhesives with enhanced stability10 Sep 2026US 2026/0265594 A1Ecolab USA Inc.
- Paper making machine27 Aug 2026US 2026/0250907 A1Toscotec S.P.A.
- Hybrid gas/electric air heating system for material drying systems6 Aug 2026US 2026/0226682 A1Andritz Canada Inc.
- A paper machine18 Jun 2026US 2026/0168174 A1Valmet Corporation
Most cited
By later US patents
- Wet crepe, impingement-air dry process for making absorbent sheet110US 6,432,267 B1Georgia-Pacific Corporation · 2002
- Method of controlling adhesive build-up on a yankee dryer103US 7,850,823 B2Georgia-Pacific Consumer Products LP · 2010
- Process for making throughdried tissue using exhaust gas recovery73US 6,551,461 B2Kimberly-Clark Worldwide, Inc. · 2003
- Wet crepe throughdry process for making absorbent sheet and novel fibrous product55US 6,752,907 B2Georgia-Pacific Corporation · 2004
- Wet crepe throughdry process for making absorbent sheet and novel fibrous products54US 7,691,228 B2Georgia-Pacific Consumer Products LP · 2010