B29C 48/21
The layers being joined at their surfaces
Official title: the layers being joined at their surfaces
B29C48/21 (The layers being joined at their surfaces) appears on 3,061 US grants and 3,363 published applications in this corpus.
Search patents in B29C- Granted patents
- 3,061
- Published applications
- 3,363
- Assignees
- 1,702
- Inventors
- 6,943
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 24 | 0 |
| 1978 | 31 | 0 |
| 1979 | 18 | 0 |
| 1980 | 31 | 0 |
| 1981 | 38 | 0 |
| 1982 | 25 | 0 |
| 1983 | 32 | 0 |
| 1984 | 40 | 0 |
| 1985 | 37 | 0 |
| 1986 | 34 | 0 |
| 1987 | 40 | 0 |
| 1988 | 53 | 0 |
| 1989 | 59 | 0 |
| 1990 | 37 | 0 |
| 1991 | 46 | 0 |
| 1992 | 55 | 0 |
| 1993 | 41 | 0 |
| 1994 | 25 | 0 |
| 1995 | 46 | 0 |
| 1996 | 43 | 0 |
| 1997 | 43 | 0 |
| 1998 | 74 | 0 |
| 1999 | 44 | 0 |
| 2000 | 40 | 0 |
| 2001 | 58 | 25 |
| 2002 | 39 | 84 |
| 2003 | 59 | 94 |
| 2004 | 62 | 93 |
| 2005 | 40 | 96 |
| 2006 | 54 | 67 |
| 2007 | 31 | 86 |
| 2008 | 29 | 97 |
| 2009 | 32 | 100 |
| 2010 | 47 | 122 |
| 2011 | 55 | 118 |
| 2012 | 53 | 132 |
| 2013 | 64 | 117 |
| 2014 | 75 | 170 |
| 2015 | 81 | 150 |
| 2016 | 85 | 171 |
| 2017 | 118 | 210 |
| 2018 | 129 | 174 |
| 2019 | 146 | 179 |
| 2020 | 147 | 160 |
| 2021 | 115 | 174 |
| 2022 | 110 | 161 |
| 2023 | 119 | 169 |
| 2024 | 135 | 167 |
| 2025 | 117 | 163 |
| 2026 | 71 | 84 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Co-extruded sheet29 Sep 2026US 12,746,742 B2Maxell, Ltd.
- Method for manufacturing polyester film having laminated structure29 Sep 2026US 12,747,326 B2Nan Ya Plastics Corporation
- Slot die coating using concave die lip over deformable back-up roll15 Sep 2026US 12,734,544 B23M Innovative Properties Company
- Biaxially oriented film15 Sep 2026US 12,734,740 B2NOVA Chemicals (International) S.A.
- Full polyethylene blown film through double bubble process15 Sep 2026US 12,734,792 B2ExxonMobil Chemical Patents Inc.
- High puncture resistant recyclable packaging film with polar polymer outer layer8 Oct 2026US 2026/0307317 A1ProAmpac Holdings Inc.
- Biaxially oriented film8 Oct 2026US 2026/0307318 A1NOVA Chemicals (International) S.A.
- Recyclable multilayer films having a heco-based core layer8 Oct 2026US 2026/0307321 A1
- Method for producing multilayer plastics straps, and multilayer plastics strap8 Oct 2026US 2026/0307367 A1Teufelberger Gesellschaft M.B.H.
- Multi-layer, coextruded polyester film with reduced puncture resistance, for use as blister cover film8 Oct 2026US 2026/0307875 A1Mitsubishi Polyester Film GmbH
Most cited
By later US patents
- Multilayer polymeric film481US 5,006,394 AThe Procter & Gamble Company · 1991
- Tubing327US 5,533,985 A1996
- Coextrusion of multilayer articles using protective boundary layers and apparatus therefor319US 5,269,995 AThe Dow Chemical Company · 1993
- Method for building three-dimensional models in extrusion-based digital manufacturing systems using ribbon filaments296US 8,221,669 B2Stratasys, Inc. · 2012
- Layer thickness gradient control in multilayer polymeric bodies271US 5,389,324 AThe Dow Chemical Company · 1995