B29C 44/22
Consisting of at least two parts of chemically or physically different materials
Official title: consisting of at least two parts of chemically or physically different materials, e.g. having different densities
B29C44/22 (Consisting of at least two parts of chemically or physically different materials) appears on 241 US grants and 238 published applications in this corpus.
Search patents in B29C- Granted patents
- 241
- Published applications
- 238
- Assignees
- 180
- Inventors
- 584
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 16 | 0 |
| 2002 | 8 | 15 |
| 2003 | 3 | 8 |
| 2004 | 7 | 14 |
| 2005 | 3 | 12 |
| 2006 | 3 | 9 |
| 2007 | 4 | 9 |
| 2008 | 4 | 2 |
| 2009 | 1 | 13 |
| 2010 | 7 | 15 |
| 2011 | 4 | 11 |
| 2012 | 8 | 10 |
| 2013 | 15 | 8 |
| 2014 | 7 | 11 |
| 2015 | 5 | 8 |
| 2016 | 4 | 7 |
| 2017 | 2 | 7 |
| 2018 | 10 | 10 |
| 2019 | 11 | 12 |
| 2020 | 4 | 11 |
| 2021 | 11 | 17 |
| 2022 | 2 | 8 |
| 2023 | 14 | 8 |
| 2024 | 5 | 8 |
| 2025 | 6 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of making flat foam sheet comprising recycled pet and the product resulting therefrom24 Mar 2026US 12,583,203 B2MuCell Extrusion, LLC
- Synthetic resin skin material and manufacturing method thereof2 Dec 2025US 12,486,613 B2Kyowa Leather Cloth Co., Ltd.
- Methods for manufacturing footwear stiffeners12 Aug 2025US 12,384,130 B2Stanbee Company, Inc.
- Methods of improving lofting agent retention using bicomponent fibers22 Jul 2025US 12,365,778 B2Hanwha Azdel, Inc.
- Polyethylene resin multilayer foam sheet, interleaving paper for glass plates, and method for manufacturing polyethylene resin multilayer foam sheet15 Apr 2025US 12,275,179 B2Jsp Corporation
- Corrugated tubular member and method for producing corrugated tubular member23 Oct 2025US 2025/0327537 A1Toyoda Gosei Co., Ltd.
- Resin sheet and resin molding18 Sep 2025US 2025/0290232 A1Maxell, Ltd.
- Compositions for manufacturing footware stiffeners13 Feb 2025US 2025/0050618 A1Stanbee Company, Inc.
- Co-extruded sheet16 Jan 2025US 2025/0018692 A1Maxell, Ltd.
- Co-extruded sheet9 Jan 2025US 2025/0010589 A1Maxell, Ltd.
Most cited
By later US patents
- Foam-filled extruded decking plank and decking attachment system112US 5,660,016 A1997
- Foamed thermoplastic polymer and wood fiber profile and member100US 6,054,207 AAndersen Corporation · 2000
- Freeze-resistant plastic pipe and method for its manufacture95US 4,773,448 A1988
- Method of co-extrusion with foam core77US 4,206,165 ATri-Seal International, Inc. · 1980
- Oriented polymeric products67US 6,053,214 AUponor N.V. · 2000