B29B 7/7689
Plunger constructions
Official title: {Plunger constructions}
B29B7/7689 (Plunger constructions) appears on 134 US grants and 72 published applications in this corpus.
Search patents in B29B- Granted patents
- 134
- Published applications
- 72
- Assignees
- 62
- Inventors
- 202
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 9 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 5 |
| 2005 | 3 | 4 |
| 2006 | 2 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 5 |
| 2009 | 5 | 4 |
| 2010 | 3 | 4 |
| 2011 | 1 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 2 |
| 2014 | 2 | 2 |
| 2015 | 0 | 4 |
| 2016 | 3 | 1 |
| 2017 | 2 | 0 |
| 2018 | 3 | 2 |
| 2019 | 0 | 1 |
| 2020 | 0 | 6 |
| 2021 | 1 | 10 |
| 2022 | 3 | 2 |
| 2023 | 4 | 2 |
| 2024 | 8 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Lubricated mixing device for reaction plastics and method for generating reaction plastics19 Aug 2025US 12,390,778 B2KraussMaffei Technologies GmbH
- System and method to auto-pressurize prior to dispense in a circulation dispense system22 Oct 2024US 12,122,068 B2Graco Minnesota Inc.
- Foam-in-bag systems and components thereof8 Oct 2024US 12,109,731 B2Sealed Air Corporation (US)
- Method and apparatus for preparing and dispensing a mixture obtained by mixing chemically reactive components, at least one of which containing a filler material23 Jul 2024US 12,042,955 B2Afros S. P. A.
- Foam-in-bag systems and components thereof9 Jul 2024US 12,030,221 B2Sealed Air Corporation (US)
- Method for producing components from polyurethane in a shot method16 Apr 2026US 2026/0102952 A1Hennecke GmbH
- High pressure mixing head for continuously producing polymeric foam20 Nov 2025US 2025/0353217 A1Afros S. P. A.
- Mixing head and method for producing a mixing head16 Jan 2025US 2025/0018608 A1KraussMaffei Technologies GmbH
- Sensorized spacer, related mixing head and related apparatus11 Apr 2024US 2024/0116254 A1Afros S. P. A.
- Device and method for mixing at least two chemically reactive plastics components12 Oct 2023US 2023/0321874 A1KraussMaffei Technologies GmbH
Most cited
By later US patents
- Method for making an abrasive article and abrasive articles thereof113US 6,179,887 B23M Innovative Properties Company · 2001
- System for filling a mold with reactive synthetic-resin components50US 3,975,128 AKrauss-Maffei Aktiengesellschaft · 1976
- Polishing pad37US 6,837,781 B2Rogers Inoac Corporation · 2005
- Mixing head for mixing at least two reactive components36US 4,141,470 ABayer Aktiengesellschaft · 1979
- Apparatus for dispensing a mixture of mutually reactive liquids36US 4,523,696 AGusmer Corporation · 1985