B29L 2031/601
Multi-tubular articles, i.e. composed of a plurality of tubes
Official title: {Multi-tubular articles, i.e. composed of a plurality of tubes (hollow-walled B29L2024/00)}
B29L2031/601 (Multi-tubular articles, i.e. composed of a plurality of tubes) appears on 257 US grants and 150 published applications in this corpus.
Search patents in B29L- Granted patents
- 257
- Published applications
- 150
- Assignees
- 167
- Inventors
- 424
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 2 |
| 2002 | 5 | 8 |
| 2003 | 9 | 17 |
| 2004 | 6 | 7 |
| 2005 | 9 | 6 |
| 2006 | 3 | 4 |
| 2007 | 3 | 14 |
| 2008 | 1 | 6 |
| 2009 | 5 | 12 |
| 2010 | 3 | 9 |
| 2011 | 9 | 8 |
| 2012 | 5 | 9 |
| 2013 | 10 | 9 |
| 2014 | 3 | 4 |
| 2015 | 2 | 6 |
| 2016 | 9 | 4 |
| 2017 | 2 | 5 |
| 2018 | 7 | 0 |
| 2019 | 6 | 4 |
| 2020 | 2 | 3 |
| 2021 | 2 | 4 |
| 2022 | 2 | 2 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of welding a sleeve to a tube, and device obtained thereby13 May 2025US 12,296,542 B2Enki S.R.L.
- Formed sheet membrane element and filtration system6 Aug 2024US 12,053,743 B2Fibracast Ltd.
- Starch-based multi-channel airflow unit and preparation method and application thereof27 Feb 2024US 11,911,948 B2China Tobacco Guangdong Industrial Co., Ltd.
- Composite structural panels and methods of forming thereof13 Jun 2023US 11,673,362 B2The Boeing Company
- Cannula bump9 May 2023US 11,642,833 B2Smiths Medical ASD, Inc.
- Forming apparatus and method29 Jan 2026US 2026/0027765 A1Stirling Moulded Composites Limited
- Die for producing aerosol-generating articles18 Dec 2025US 2025/0381721 A1Smoore International Holdings Limited
- Automated systems and methods for foil packaging components29 May 2025US 2025/0171175 A1Amgen Inc.
- Composite tubular structure10 Oct 2024US 2024/0337333 A1Composite Braiding Ltd
- Formed sheet membrane element and filtration system3 Oct 2024US 2024/0325979 A1Fibracast Ltd.
Most cited
By later US patents
- Dual lumen catheter172US 5,188,593 AVas-Cath Incorporated · 1993
- Thermal insulating curtain, especially for use in greenhouses118US 4,019,554 A1977
- Flexible surgical drain with a plurality of individual ducts106US 5,891,111 APorges · 1999
- Method, device and padded product for maintaining an object102US 5,009,318 ALepinoy Industrie · 1991
- Double wall piping system99US 4,932,257 A1990