B28B 3/22
By screw or worm
Official title: by screw or worm
B28B3/22 (By screw or worm) appears on 103 US grants and 101 published applications in this corpus.
Search patents in B28B- Granted patents
- 103
- Published applications
- 101
- Assignees
- 60
- Inventors
- 199
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 5 |
| 2003 | 1 | 5 |
| 2004 | 4 | 5 |
| 2005 | 4 | 3 |
| 2006 | 3 | 1 |
| 2007 | 2 | 5 |
| 2008 | 0 | 1 |
| 2009 | 1 | 5 |
| 2010 | 0 | 7 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 0 | 5 |
| 2014 | 4 | 5 |
| 2015 | 5 | 3 |
| 2016 | 3 | 5 |
| 2017 | 2 | 1 |
| 2018 | 2 | 5 |
| 2019 | 4 | 6 |
| 2020 | 4 | 5 |
| 2021 | 3 | 9 |
| 2022 | 4 | 5 |
| 2023 | 3 | 1 |
| 2024 | 4 | 2 |
| 2025 | 2 | 7 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and systems for cutting a channel in a precast concrete slab16 Jun 2026US 12,654,358 B2Concore BV
- Prefabricated floor element, structure comprising prefabricated floor elements and installation for obtaining the prefabricated floor element30 Dec 2025US 12,509,880 B2Elastic Potential, S.L.
- Method for manufacturing silicon carbide ceramic special-shaped part with complex shape by plastic fused deposition modeling (FDM)-3D printing based on water debinding2 Sep 2025US 12,403,625 B1Dongguan University of Technology
- Print head for printing three-dimensional structures made of concrete and a method therefor31 Dec 2024US 12,179,381 B2B.T. Innovation GmbH
- Method for manufacturing prefabricated concrete products10 Dec 2024US 12,162,183 B2Elematic Oyj
- Brick and manufacturting method therefor19 Feb 2026US 2026/0049029 A1
- Process and System for the Calcination of Gypsum20 Nov 2025US 2025/0353789 A1Knauf Gips KG
- Extruder for Producing Gypsum Moulded Articles, Process for Manufacturing Gypsum-Based Articles and Gypsum-Based Articles13 Nov 2025US 2025/0345967 A1Knauf Gips KG
- System for extruding building material enriched with aggregates and/or steel fibres for the additive manufacturing of architectural structures28 Aug 2025US 2025/0269552 A2Xtreee
- Cement-based tile24 Jul 2025US 2025/0236558 A1The Intellectual Gorilla GmbH
Most cited
By later US patents
- Method and apparatus for manufacturing concrete panels by continuous pressing88US 5,366,676 A1994
- Extrusion casting apparatus59US 4,133,619 AThe Flexicore Co., Inc. · 1979
- Ceramic material extruding method and apparatus therefor20US 4,839,120 ANGK Insulators, Ltd. · 1989
- Concrete slab extruder having a free flight auger17US 4,022,556 AGeorge Hyman Construction Co. · 1977
- Extrusion apparatus for ceramic honeycomb articles14US 6,375,450 B1Corning Incorporated · 2002