B31F 1/20
Corrugating
Official title: Corrugating; Corrugating combined with laminating to other layers
B31F1/20 (Corrugating) appears on 826 US grants and 570 published applications in this corpus.
Search patents in B31F- Granted patents
- 826
- Published applications
- 570
- Assignees
- 338
- Inventors
- 1,076
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 13 | 0 |
| 1978 | 15 | 0 |
| 1979 | 11 | 0 |
| 1980 | 8 | 0 |
| 1981 | 22 | 0 |
| 1982 | 17 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 19 | 0 |
| 1986 | 23 | 0 |
| 1987 | 15 | 0 |
| 1988 | 11 | 0 |
| 1989 | 10 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 21 | 0 |
| 1993 | 15 | 0 |
| 1994 | 21 | 0 |
| 1995 | 16 | 0 |
| 1996 | 21 | 0 |
| 1997 | 32 | 0 |
| 1998 | 31 | 0 |
| 1999 | 28 | 0 |
| 2000 | 32 | 0 |
| 2001 | 15 | 7 |
| 2002 | 15 | 21 |
| 2003 | 15 | 20 |
| 2004 | 14 | 23 |
| 2005 | 5 | 14 |
| 2006 | 3 | 11 |
| 2007 | 8 | 17 |
| 2008 | 7 | 19 |
| 2009 | 3 | 13 |
| 2010 | 12 | 15 |
| 2011 | 11 | 26 |
| 2012 | 8 | 14 |
| 2013 | 19 | 21 |
| 2014 | 16 | 29 |
| 2015 | 14 | 35 |
| 2016 | 17 | 12 |
| 2017 | 19 | 25 |
| 2018 | 15 | 32 |
| 2019 | 19 | 35 |
| 2020 | 23 | 24 |
| 2021 | 29 | 29 |
| 2022 | 27 | 26 |
| 2023 | 19 | 32 |
| 2024 | 25 | 26 |
| 2025 | 22 | 27 |
| 2026 | 10 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for operating a system having a corrugator and a printing machine, and system6 Oct 2026US 12,752,550 B2BHS Corrugated Maschinen-und Anlagenbau GmbH
- Plant and method for manufacturing corrugated board with an order change detector8 Sep 2026US 12,728,615 B2Fosber S.p.A.
- Warp detection in traveling corrugated product18 Aug 2026US 12,709,082 B2Intpro, LLC
- Drum lagging material12 May 2026US 12,623,429 B2Albany International Corp.
- Device for detecting paper splice part of cardboard sheet, and device for producing cardboard sheet31 Mar 2026US 12,589,572 B2Mitsubishi Heavy Industries Machinery Systems, Ltd.
- Method for operating a corrugator, corrugator, computer programme product, and paper roll8 Oct 2026US 2026/0307357 A1BHS Corrugated Maschinen-und Anlagenbau GmbH
- Arrangement and method10 Sep 2026US 2026/0264360 A1BHS Corrugated Maschinen-und Anlagenbau GmbH
- Stacking media bin27 Aug 2026US 2026/0249581 A1Cardtronics USA, Inc.
- Corrugated cardboard and a method for producing a corrugated cardboard20 Aug 2026US 2026/0243022 A1Jml Innovation AB
- Printing assembly, printing method and material web16 Jul 2026US 2026/0200197 A1BHS Corrugated Maschinen-und Anlagenbau GmbH
Most cited
By later US patents
- Method for making a sheet of loop material185US 5,256,231 AMinnesota Mining and Manufacturing Company · 1993
- Loop fastening material for fastening device and method of making same113US 5,380,313 AThe Proctor & Gamble Company · 1995
- Coated abrasive sheet material with loop material for attachment incorporated therein109US 5,254,194 AMinnesota Mining and Manufacturing Company · 1993
- Repulpable corrugated box with styrene-acrylic copolymer and hydrogenated triglyceride coating95US 9,701,437 B2Indevco Plastics, Inc. · 2017
- Laminated moisture resistant poultry box and process94US 10,226,909 B2Indevco Plastics, Inc. · 2019