B32B 3/20
Of hollow pieces
Official title: of hollow pieces, e.g. tubes; of pieces with channels or cavities
B32B3/20 (Of hollow pieces) appears on 416 US grants and 509 published applications in this corpus.
Search patents in B32B- Granted patents
- 416
- Published applications
- 509
- Assignees
- 312
- Inventors
- 974
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 6 |
| 2003 | 7 | 12 |
| 2004 | 9 | 10 |
| 2005 | 3 | 7 |
| 2006 | 3 | 12 |
| 2007 | 4 | 6 |
| 2008 | 4 | 5 |
| 2009 | 5 | 3 |
| 2010 | 3 | 10 |
| 2011 | 4 | 10 |
| 2012 | 3 | 6 |
| 2013 | 4 | 9 |
| 2014 | 10 | 12 |
| 2015 | 4 | 18 |
| 2016 | 4 | 8 |
| 2017 | 16 | 45 |
| 2018 | 15 | 51 |
| 2019 | 28 | 62 |
| 2020 | 57 | 62 |
| 2021 | 42 | 56 |
| 2022 | 30 | 38 |
| 2023 | 40 | 25 |
| 2024 | 37 | 15 |
| 2025 | 23 | 14 |
| 2026 | 8 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Expandable and/or disposable ice pack22 Sep 2026US 12,741,442 B2
- Multilayered helmet with independently movable segments18 Aug 2026US 12,708,169 B2ENG Designs, LLC
- Sphere-based structural core layer and method for use in aircraft30 Jun 2026US 12,668,038 B2The Boeing Company
- Polymeric film and method of making same2 Jun 2026US 12,643,275 B23M Innovative Properties Company
- Reinforcement for a side-impact17 Mar 2026US 12,576,609 B2Zephyros, Inc.
- Protective vehicle cover device3 Sep 2026US 2026/0257546 A1
- Reinforcement for a Side-Impact2 Jul 2026US 2026/0184036 A1Zephyros, Inc.
- Thermal management system and device11 Jun 2026US 2026/0163112 A1
- Film comprising polylactic acid polymer suitable for graphic articles4 Jun 2026US 2026/0152634 A13M Innovative Properties Company
- Packaging material14 May 2026US 2026/0131962 A1IForm, Inc.
Most cited
By later US patents
- Woven constructs with interlocked standing fibers858US 10,271,849 B2Ethicon, Inc. · 2019
- Compressible adjuncts with bonding nodes852US 10,172,620 B2Ethicon, Inc. · 2019
- Compressible adjunct assemblies with attachment layers823US 10,307,160 B2Ethicon, Inc. · 2019
- Compressible adjunct808US 10,285,699 B2Ethicon, Inc. · 2019
- Implantable layer comprising plastically deformed fibers796US 10,327,777 B2Ethicon, Inc. · 2019