B29C 48/71
For layer multiplication
Official title: for layer multiplication (extrusion of multi-component articles B29C48/16)
B29C48/71 (For layer multiplication) appears on 128 US grants and 148 published applications in this corpus.
Search patents in B29C- Granted patents
- 128
- Published applications
- 148
- Assignees
- 59
- Inventors
- 246
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 5 |
| 2002 | 0 | 2 |
| 2003 | 2 | 4 |
| 2004 | 7 | 2 |
| 2005 | 3 | 4 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 3 | 9 |
| 2011 | 2 | 7 |
| 2012 | 4 | 12 |
| 2013 | 3 | 12 |
| 2014 | 5 | 9 |
| 2015 | 8 | 11 |
| 2016 | 8 | 7 |
| 2017 | 14 | 9 |
| 2018 | 5 | 8 |
| 2019 | 9 | 3 |
| 2020 | 9 | 6 |
| 2021 | 2 | 4 |
| 2022 | 7 | 7 |
| 2023 | 4 | 8 |
| 2024 | 4 | 6 |
| 2025 | 5 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for forming high strength products2 Sep 2025US 12,403,641 B2Guill Tool & Engineering Co., Inc.
- Films and sheets having microlayers and nanolayers including recycled content29 Apr 2025US 12,285,931 B2Peak Nano Films, LLC
- Electrical connectors with thin interior walls15 Apr 2025US 12,278,454 B2Yazaki Corporation
- Additive free fabrication of polymeric composites with delayed and reduced dripping11 Mar 2025US 12,246,518 B2
- Process, apparatus and system for creating extruded material having color effects and products made with extruded material created with same18 Feb 2025US 12,226,934 B2Pelican International Inc.
- System and method for manufacturing gradient material structures, such as gradient refractive index materials23 Apr 2026US 2026/0109102 A1
- Annular microlayer feedblock22 Jan 2026US 2026/0021621 A1Guill Tool & Engineering Co., Inc.
- Electrical connectors with thin interior walls19 Jun 2025US 2025/0202183 A1Yazaki Corporation
- Process, apparatus and system for creating extruded material having color effects and products made with extruded material created with same5 Jun 2025US 2025/0178239 A1Pelican International Inc.
- Extrudable polymer composites with membrane barrier properties6 Mar 2025US 2025/0073978 A1Guill Tool & Engineering Co., Inc.
Most cited
By later US patents
- Coextrusion of multilayer articles using protective boundary layers and apparatus therefor319US 5,269,995 AThe Dow Chemical Company · 1993
- Apparatus for making multilayer optical films258US 6,783,349 B23M Innovative Properties Company · 2004
- Interfacial surface generator200US 5,094,788 AThe Dow Chemical Company · 1992
- Methods and apparatus for generating interfacial surfaces189US 5,094,793 AThe Dow Chemical Company · 1992
- Method for making multilayer optical films102US 6,827,886 B23M Innovative Properties Company · 2004