B31F 1/2854
Means for keeping the sheet in contact with one of the corrugating
Official title: {Means for keeping the sheet in contact with one of the corrugating rollers after corrugating, but before applying the facer sheet, e.g. by air pressure, suction or pressing fingers}
B31F1/2854 (Means for keeping the sheet in contact with one of the corrugating) appears on 35 US grants and 10 published applications in this corpus.
Search patents in B31F- Granted patents
- 35
- Published applications
- 10
- Assignees
- 25
- Inventors
- 50
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Single facer for manufacturing a corrugated board with a pressing unit with a continuous flexible member25 Mar 2025US 12,257,807 B2Fosber S.p.A.
- Waterproof corrugated paper, manufacturing method thereof, manufacturing apparatus thereof, and usage thereof25 Oct 2022US 11,479,028 B2Taiwan Lung Meng Advanced Composite Materials Co., Ltd.
- Corrugated cardboard plant26 Oct 2021US 11,155,055 B2BHS Corrugated Maschinen-und Anlagenbau GmbH
- Single facer for producing single face corrugated paperboard, and related method14 Apr 2020US 10,618,242 B2Guangdong Fosber Intelligent Equipment Co., Ltd.
- Corrugating roller for the manufacture of corrugated cardboard7 Jul 2015US 9,073,283 B2BHS Corrugated Maschinen-und Anlagenbau GmbH
- A single facer for manufacturing a corrugated board with a pressing unit with a continuous flexible member20 Jul 2023US 2023/0226796 A1Fosber S.p.A.
- Waterproof corrugated paper, manufacturing method thereof, manufacturing apparatus thereof, and usage thereof30 Sep 2021US 2021/0300008 A1Taiwan Lung Meng Advanced Composite Materials Co., Ltd.
- Corrugated Cardboard Manufacturing Brush with Acetyl Tines22 Apr 2021US 2021/0114328 A1Wagner Industries, Inc.
- Single facer for producing single face corrugated paperboard, and related method11 Apr 2019US 2019/0105866 A1Guangdong Fosber Intelligent Equipment Co., Ltd.
- Corrugated cardboard plant21 Mar 2019US 2019/0084267 A1BHS Corrugated Maschinen-und Anlagenbau GmbH
Most cited
By later US patents
- Single facer for manufacturing single-faced corrugated board35US 4,177,102 ARengo Co., Ltd. · 1979
- Machine for producing single-face corrugated board34US 4,338,154 AS. A. Martin · 1982
- Fingerless single facer25US 4,381,212 AMolins Machine Company, Inc. · 1983
- Method and device for spacing a corrugating finger relative to a corrugating roll22US 5,588,945 ACorrugated Gear & Services, Inc. · 1996
- Apparatus for urging web guides toward the corrugating roll of a single facer18US 4,104,107 AKoppers Company, Inc. · 1978