B29C 45/67
Hydraulic
Official title: hydraulic
B29C45/67 (Hydraulic) appears on 324 US grants and 188 published applications in this corpus.
Search patents in B29C- Granted patents
- 324
- Published applications
- 188
- Assignees
- 147
- Inventors
- 487
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 14 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 8 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 3 |
| 2002 | 4 | 8 |
| 2003 | 9 | 14 |
| 2004 | 11 | 14 |
| 2005 | 10 | 10 |
| 2006 | 7 | 5 |
| 2007 | 8 | 11 |
| 2008 | 6 | 8 |
| 2009 | 11 | 5 |
| 2010 | 6 | 6 |
| 2011 | 4 | 5 |
| 2012 | 3 | 5 |
| 2013 | 2 | 7 |
| 2014 | 4 | 3 |
| 2015 | 6 | 5 |
| 2016 | 7 | 8 |
| 2017 | 9 | 9 |
| 2018 | 2 | 8 |
| 2019 | 5 | 9 |
| 2020 | 5 | 6 |
| 2021 | 10 | 10 |
| 2022 | 6 | 8 |
| 2023 | 7 | 4 |
| 2024 | 5 | 8 |
| 2025 | 8 | 4 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29C 45/6707Without relative movement between the piston and the cylinder of the clamping183
- B29C 45/6764Using hydraulically connectable chambers of the clamping cylinder during the mould opening34
- B29C 2045/6785Interconnecting two cylinders to supply fluid from one cylinder to the otherIndexing code10
- B29C 45/6778Stroke adjusting or limiting means3
- B29C 2045/6792Combined pneumatic-hydraulic cylindersIndexing code0
Recent patents
- Hydraulic circuit for opening and closing mould of injection moulding machine, and injection moulding machine system28 Jul 2026US 12,691,622 B2Danfoss A/S
- Injection molding method and injection molding machine24 Mar 2026US 12,583,161 B2Nissei Plastic Industrial Co., Ltd.
- Method for manufacturing a die-casting machine and die-casting machine25 Nov 2025US 12,479,023 B2Italpressegauss S.P.A.
- Mold-clamping machine11 Nov 2025US 12,466,116 B2Nissei Plastic Industrial Co., Ltd.
- Electric mould opening and closing system of injection moulding machine21 Oct 2025US 12,447,657 B2Suzhou Gienkee Plastic Technology Co. , Ltd.
- System for operating clamp axis of an injection molding machine and method thereof13 Aug 2026US 2026/0234909 A1
- Mold clamping device and mold clamping method30 Jul 2026US 2026/0216934 A1The Japan Steel Works, Ltd.
- Rotary multi-injection molding machine23 Apr 2026US 2026/0109090 A1LG Electronics Inc.
- Closing unit for a molding machine9 Apr 2026US 2026/0097546 A1Engel Austria GmbH
- Machine element for mounting a mold as well as a tie-bar-less molding machine havng such a machine component9 Apr 2026US 2026/0097547 A1Engel Austria GmbH
Most cited
By later US patents
- Closed-system electrohydraulic actuator93US 7,051,526 B2Moog Inc. · 2006
- Compact hydraulic drive for die closing unit of injection molding machine46US 4,380,427 A1983
- Die clamping apparatus43US 4,874,309 AMitsubishi Jukogyo Kabushiki Kaisha · 1989
- Hydraulic system for the mold clamping unit of a plastics injection molding machine40US 4,846,664 A1989
- Hydraulic speed controls for die closing unit of injection molding machine38US 4,565,116 A1986