B28B 3/02
Wherein a ram exerts pressure on the material in a moulding space
Official title: wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
B28B3/02 (Wherein a ram exerts pressure on the material in a moulding space) appears on 615 US grants and 518 published applications in this corpus.
Search patents in B28B- Granted patents
- 615
- Published applications
- 518
- Assignees
- 392
- Inventors
- 1,162
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 12 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 22 | 0 |
| 1997 | 32 | 0 |
| 1998 | 27 | 0 |
| 1999 | 14 | 0 |
| 2000 | 12 | 0 |
| 2001 | 8 | 1 |
| 2002 | 11 | 10 |
| 2003 | 10 | 6 |
| 2004 | 10 | 10 |
| 2005 | 0 | 10 |
| 2006 | 4 | 13 |
| 2007 | 8 | 6 |
| 2008 | 1 | 12 |
| 2009 | 5 | 19 |
| 2010 | 11 | 13 |
| 2011 | 5 | 11 |
| 2012 | 9 | 13 |
| 2013 | 8 | 14 |
| 2014 | 18 | 16 |
| 2015 | 18 | 31 |
| 2016 | 12 | 20 |
| 2017 | 20 | 42 |
| 2018 | 17 | 27 |
| 2019 | 25 | 25 |
| 2020 | 20 | 28 |
| 2021 | 20 | 32 |
| 2022 | 19 | 38 |
| 2023 | 21 | 40 |
| 2024 | 34 | 31 |
| 2025 | 34 | 29 |
| 2026 | 19 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B28B 3/025Hot pressing110
- B28B 3/022Combined with vibrating or jolting109
- B28B 3/08With two or more rams per mould93
- B28B 3/021Ram heads of special form77
- B28B 3/04With one ram per mould68
- B28B 3/024The pressure on the material being transmitted through flexible or resilient wall21
- B28B 3/027Using a bottom press ram actuated upwardly towards mould covers19
- B28B 3/10Each charge of material being compressed against previously formed body16
All 9 subgroupsShow fewer
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By later US patents
- Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets312US 5,830,548 AE. Khashoggi Industries · 1998
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