B29C 45/1642
Having a "sandwich" structure
Official title: {having a "sandwich" structure (B29C45/1603 takes precedence)}
B29C45/1642 (Having a "sandwich" structure) appears on 408 US grants and 337 published applications in this corpus.
Search patents in B29C- Granted patents
- 408
- Published applications
- 337
- Assignees
- 250
- Inventors
- 745
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 9 | 0 |
| 1990 | 14 | 0 |
| 1991 | 11 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 14 | 0 |
| 1999 | 12 | 0 |
| 2000 | 16 | 0 |
| 2001 | 17 | 4 |
| 2002 | 11 | 13 |
| 2003 | 16 | 27 |
| 2004 | 8 | 15 |
| 2005 | 7 | 10 |
| 2006 | 8 | 16 |
| 2007 | 6 | 11 |
| 2008 | 5 | 13 |
| 2009 | 4 | 2 |
| 2010 | 6 | 12 |
| 2011 | 8 | 10 |
| 2012 | 6 | 10 |
| 2013 | 9 | 15 |
| 2014 | 8 | 22 |
| 2015 | 9 | 15 |
| 2016 | 11 | 20 |
| 2017 | 15 | 12 |
| 2018 | 18 | 21 |
| 2019 | 9 | 15 |
| 2020 | 11 | 16 |
| 2021 | 11 | 14 |
| 2022 | 8 | 14 |
| 2023 | 11 | 15 |
| 2024 | 13 | 5 |
| 2025 | 10 | 7 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 45/1646Injecting parison-like articles113
- B29C 45/1643From at least three different materials or with at least four layers86
- B29C 45/1645Injecting skin and core materials from the same injection cylinder23
- B29C 2045/1656Injecting the skin material through the central passage of the multiway nozzleIndexing code22
- B29C 2045/1651Independent injection runners or nozzlesIndexing code16
- B29C 2045/1654Whereby the core material is penetrating through the skinIndexing code14
- B29C 2045/1653Using a core injection nozzle penetrating through the skin or into theIndexing code7
Recent patents
- Injection molding method6 Oct 2026US 12,752,467 B2King Steel Machinery Co., Ltd.
- Actuating portion for a vehicle door handle assembly and method for producing such an actuating portion9 Jun 2026US 12,650,039 B2Illinois Tool Works Inc.
- Production method of a conductive member9 Jun 2026US 12,651,682 B2Nagase & Co., Ltd.
- Curved surface resin structure, electronic light control lens, and method for producing curved surface resin structure19 May 2026US 12,631,928 B2Ricoh Company, Ltd.
- Machine and method for injection molding multilayer articles having a high proportion of internal layer material7 Apr 2026US 12,594,702 B2Husky Injection Molding Systems Ltd.
- Multilayer container and method for producing multilayer container20 Aug 2026US 2026/0241619 A1Mitsubishi Gas Chemical Company, Inc.
- Production method of a lenticular body for automotive use and lighted badge for motor vehicles provided with such lenticular body18 Jun 2026US 2026/0168644 A1
- Vehicle storage compartment cover and manufacturing method thereof1 Jan 2026US 2026/0001491 A1Hyundai Motor Company
- Container and method of manufacture2 Oct 2025US 2025/0303629 A1Ring Container Technologies, LLC
- Component for a home appliance28 Aug 2025US 2025/0271200 A1LG Electronics Inc.
Most cited
By later US patents
- Squeezable multi-layer dispensing container with one-way valve197US 5,332,121 AContinental PET Technologies, Inc. · 1994
- Golf ball with a multi-layered cover185US 5,783,293 AAcushnet Company · 1998
- Multilayer plastic container and method of making the same136US 6,123,211 AAmerican National Can Company · 2000
- Coinjection of hollow articles and preforms108US 4,717,324 AHusky Injection Molding Systems Ltd. · 1988
- Multilayer bottle with separable inner layer and method for forming same102US 5,301,838 AContinental PET Technologies, Inc. · 1994