B29C 44/50
Using pressure difference
Official title: using pressure difference, e.g. by extrusion or by spraying {(B29C44/468 takes precedence)}
B29C44/50 (Using pressure difference) appears on 417 US grants and 322 published applications in this corpus.
Search patents in B29C- Granted patents
- 417
- Published applications
- 322
- Assignees
- 239
- Inventors
- 1,016
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 11 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 10 | 0 |
| 1982 | 7 | 0 |
| 1983 | 13 | 0 |
| 1984 | 27 | 0 |
| 1985 | 10 | 0 |
| 1986 | 15 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 15 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 10 |
| 2003 | 6 | 13 |
| 2004 | 2 | 5 |
| 2005 | 3 | 6 |
| 2006 | 4 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 5 |
| 2009 | 1 | 5 |
| 2010 | 0 | 5 |
| 2011 | 2 | 7 |
| 2012 | 3 | 8 |
| 2013 | 6 | 9 |
| 2014 | 7 | 13 |
| 2015 | 8 | 8 |
| 2016 | 9 | 17 |
| 2017 | 4 | 23 |
| 2018 | 1 | 24 |
| 2019 | 17 | 16 |
| 2020 | 7 | 18 |
| 2021 | 18 | 22 |
| 2022 | 9 | 33 |
| 2023 | 15 | 23 |
| 2024 | 18 | 19 |
| 2025 | 13 | 15 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Panel member production line30 Jun 2026US 12,668,003 B2Dow Global Technologies LLC
- Coextruded hemp composite board16 Jun 2026US 12,654,355 B2
- Surface finish manufacturing system and process12 May 2026US 12,623,391 B2Eva Last Hong Kong Limited
- 3D printing system for preparing a three-dimensional object with an autoclave28 Apr 2026US 12,611,815 B2Sulzer Management AG
- Foamable cellulose acetate compositions, foams and foam articles formed therefrom21 Apr 2026US 12,606,694 B2Eastman Chemical Company
- 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
- Monoextruded hemp composite board20 Aug 2026US 2026/0242604 A1
- Cellulose ester particulates having reduced moisture content for foam sheet production processes6 Aug 2026US 2026/0226197 A1Eastman Chemical Company
- Methods of thermoforming cellulose ester foamed articles6 Aug 2026US 2026/0226245 A1Eastman Chemical Company
Most cited
By later US patents
- Microcellular closed cell foams and their method of manufacture215US 4,473,665 AMassachusetts Institute of Technology · 1984
- Process for forming gelatinous elastomer materials183US 6,413,458 B1EdiZONE, LC · 2002
- Stacked cushions177US 7,076,822 B2EdiZONE, LC · 2006
- Gelatinous cushions with buckling columns169US 6,026,527 AEdiZONE, LC · 2000
- Gelatinous cushions with buckling columns164US 5,749,111 ATekSource, LC · 1998