B29C 48/56
Having grooves or cavities other than the thread or the channel
Official title: having grooves or cavities other than the thread or the channel
B29C48/56 (Having grooves or cavities other than the thread or the channel) appears on 119 US grants and 72 published applications in this corpus.
Search patents in B29C- Granted patents
- 119
- Published applications
- 72
- Assignees
- 72
- Inventors
- 198
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 2 |
| 2004 | 3 | 4 |
| 2005 | 0 | 1 |
| 2006 | 4 | 3 |
| 2007 | 3 | 8 |
| 2008 | 2 | 1 |
| 2009 | 2 | 5 |
| 2010 | 3 | 3 |
| 2011 | 0 | 3 |
| 2012 | 4 | 6 |
| 2013 | 1 | 3 |
| 2014 | 1 | 6 |
| 2015 | 6 | 4 |
| 2016 | 4 | 0 |
| 2017 | 0 | 4 |
| 2018 | 3 | 0 |
| 2019 | 2 | 2 |
| 2020 | 1 | 3 |
| 2021 | 2 | 4 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 2 | 3 |
| 2025 | 2 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Extrusion technique for forming polymer preforms, and tube-forming technique21 Apr 2026US 12,605,873 B2Kautex Maschinenbau System GmbH
- In situ exfoliation method to fabricate a graphene-reinforced polymer matrix composite4 Nov 2025US 12,460,064 B2Rutgers, The State University of New Jersey
- Production method for heat-resistant resin composition30 Sep 2025US 12,427,704 B2Denka Company Limited
- Molding apparatus, cigarette filter rod and preparation method thereof5 Nov 2024US 12,133,550 B2China Tobacco Hunan Industrial Co., Ltd.
- Treatment element for a treatment element shaft of a screw machine, and method for producing a treatment element10 Sep 2024US 12,083,729 B2Coperion GmbH
- Advanced visco-seals for single screw extruders12 Feb 2026US 2026/0042250 A1Dow Global Technologies LLC
- Extruder screw5 Feb 2026US 2026/0034715 A1Leistritz Extrusionstechnik GmbH
- In Situ Exfoliation Method to Fabricate a Graphene-Reinforced Polymer Matrix Composite5 Feb 2026US 2026/0035540 A1Rutgers, The State University of New Jersey
- Extrusion unit for forming plastic preforms, and profiling technique28 Mar 2024US 2024/0100760 A1Kautex Maschinenbau GmbH
- Extrusion technique for forming polymer preforms, and tube-forming technique21 Mar 2024US 2024/0092009 A1Kautex Maschinenbau GmbH
Most cited
By later US patents
- Mixing apparatus53US 4,128,342 ABarmag Barmer Maschinenfabrik AG · 1978
- Method and apparatus for increasing the intrinsic viscosity of a polycondensate melt44US 9,908,263 B2Next Generation Recyclingmaschinen GmbH · 2018
- High-speed direct-drive extruder37US 4,249,877 A1981
- Mixing apparatus36US 4,184,772 AFrenkel C-D Aktiengesellschaft · 1980
- Extruder mixing screw34US 5,215,764 AWestland plc · 1993