B29C 44/507
Extruding the compound through an annular die
Official title: {extruding the compound through an annular die (in general B29C48/03)}
B29C44/507 (Extruding the compound through an annular die) appears on 138 US grants and 64 published applications in this corpus.
Search patents in B29C- Granted patents
- 138
- Published applications
- 64
- Assignees
- 85
- Inventors
- 266
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 13 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 3 |
| 2010 | 0 | 3 |
| 2011 | 2 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 3 |
| 2014 | 3 | 5 |
| 2015 | 4 | 0 |
| 2016 | 0 | 4 |
| 2017 | 1 | 5 |
| 2018 | 0 | 5 |
| 2019 | 2 | 1 |
| 2020 | 0 | 5 |
| 2021 | 4 | 3 |
| 2022 | 3 | 6 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anisotropic thin foamed polyethylene sheet and applications thereof13 Jan 2026US 12,521,921 B2MuCell Extrusion, LLC
- Electromagnetic dielectric material and method for producing electromagnetic dielectric material27 May 2025US 12,313,814 B2Foshan Eahison Communication Co., Ltd.
- Method for producing biodegradable resin expanded sheet17 Sep 2024US 12,091,524 B2Sekisui Kasei Co., Ltd.
- Method for producing polypropylene-based resin foamed molded article23 Apr 2024US 11,965,084 B2Jsp Corporation
- Extruded board with realistic appearance1 Aug 2023US 11,712,831 B2Poly-Wood, LLC
- Blow up ratios in foamed sheet production processes27 Aug 2026US 2026/0249535 A1Eastman Chemical Company
- Anisotropic thin foamed polyethylene sheet and applications thereof20 Aug 2026US 2026/0241618 A1MuCell Extrusion, LLC
- Methods of thermoforming cellulose ester foamed articles6 Aug 2026US 2026/0226245 A1Eastman Chemical Company
- High Flow Polystyrene Resins, Compositions Thereof and Methods of Making30 Jul 2026US 2026/0216930 A1Shpp Global Technologies B.V.
- Flow path forming device, extrusion device, and foamed plastic sheet5 Dec 2024US 2024/0399640 A1Ricoh Company, Ltd.
Most cited
By later US patents
- Method and apparatus for microcellular polypropylene extrusion, and polypropylene articles produced thereby98US 6,231,942 B1Trexel, Inc. · 2001
- Freeze-resistant plastic pipe and method for its manufacture95US 4,773,448 A1988
- Method of continuously producing heat shrinkable amorphous polystyrene foam layer55US 4,486,366 AOwens-Illinois, Inc. · 1984
- Method of making a foamed plastic52US 4,333,898 AKabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft · 1982
- Method for extruding cellular thermoplastic products50US 3,972,970 AWestern Electric Company, Inc. · 1976