B29D 23/00
Producing tubular articles
Official title: Producing tubular articles (B29D24/00 takes precedence)
B29D23/00 (Producing tubular articles) appears on 1,403 US grants and 1,183 published applications in this corpus.
Search patents in B29D- Granted patents
- 1,403
- Published applications
- 1,183
- Assignees
- 887
- Inventors
- 2,622
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 18 | 0 |
| 1978 | 25 | 0 |
| 1979 | 15 | 0 |
| 1980 | 15 | 0 |
| 1981 | 11 | 0 |
| 1982 | 18 | 0 |
| 1983 | 8 | 0 |
| 1984 | 18 | 0 |
| 1985 | 18 | 0 |
| 1986 | 25 | 0 |
| 1987 | 27 | 0 |
| 1988 | 18 | 0 |
| 1989 | 25 | 0 |
| 1990 | 23 | 0 |
| 1991 | 14 | 0 |
| 1992 | 31 | 0 |
| 1993 | 22 | 0 |
| 1994 | 15 | 0 |
| 1995 | 27 | 0 |
| 1996 | 15 | 0 |
| 1997 | 25 | 0 |
| 1998 | 23 | 0 |
| 1999 | 28 | 0 |
| 2000 | 24 | 0 |
| 2001 | 29 | 9 |
| 2002 | 15 | 19 |
| 2003 | 22 | 19 |
| 2004 | 16 | 18 |
| 2005 | 12 | 14 |
| 2006 | 12 | 17 |
| 2007 | 6 | 22 |
| 2008 | 5 | 30 |
| 2009 | 6 | 53 |
| 2010 | 14 | 50 |
| 2011 | 16 | 37 |
| 2012 | 32 | 36 |
| 2013 | 33 | 72 |
| 2014 | 56 | 108 |
| 2015 | 52 | 92 |
| 2016 | 58 | 58 |
| 2017 | 62 | 63 |
| 2018 | 63 | 57 |
| 2019 | 63 | 68 |
| 2020 | 51 | 66 |
| 2021 | 45 | 58 |
| 2022 | 50 | 56 |
| 2023 | 54 | 41 |
| 2024 | 45 | 55 |
| 2025 | 50 | 47 |
| 2026 | 19 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Constant strain PEX expansion tool head1 Sep 2026US 12,722,338 B2Zurn Water, LLC
- Preparation method and use of hybrid composite pipes25 Aug 2026US 12,716,528 B2
- Fluid collection devices and methods of manufacturing same4 Aug 2026US 12,697,244 B2Purewick Corporation
- Method for producing a flexible composite pipe, and thermoplastic composite pipe4 Aug 2026US 12,697,793 B2Fibron Pipe GESMBH
- Composite telescopic hose and preparation method thereof4 Aug 2026US 12,698,381 B2Shaoxing Shangyu District Fenghua Metal Products Factory
- Device for controlling pitch and tension of a wire deposited onto mandrel in composite-hose manufacturing8 Oct 2026US 2026/0307348 A1Gasso Equipments, S.A.
- Braided hose24 Sep 2026US 2026/0287094 A1Danfoss A/S
- Thermoformed polymeric valved conduits for heart valve applications27 Aug 2026US 2026/0248609 A1Colorado State University Research Foundation
- Fiber-reinforced resin cylinder, manufacturing method for fiber-reinforced resin cylinder, and fiber-reinforced resin cylinder manufacturing jig6 Aug 2026US 2026/0225329 A1Astemo, Ltd.
- Oxygenating oropharyngeal airway devices, kits relating to same, and methods of using same16 Jul 2026US 2026/0199619 A1Baylor Research Institute D/B/A Baylor Scott & White Research Institute
Most cited
By later US patents
- Longitudinally compliant vascular graft350US 4,955,899 AImpra, Inc. · 1990
- Stent graft with braided polymeric sleeve343US 5,957,974 ASchneider (USA) Inc. · 1999
- Method of making a stent-graft covered with expanded polytetrafluoroethylene318US 5,788,626 ASchneider (USA) Inc. · 1998
- Percutaneous vascular access portal and catheter294US 4,318,401 APresident and Fellows of Harvard College · 1982
- Method of making same256US 4,187,271 AOwens-Corning Fiberglas Corporation · 1980