B29B 7/484
With two shafts provided with screws
Official title: {with two shafts provided with screws, e.g. one screw being shorter than the other (B29B7/482 takes precedence)}
B29B7/484 (With two shafts provided with screws) appears on 97 US grants and 109 published applications in this corpus.
Search patents in B29B- Granted patents
- 97
- Published applications
- 109
- Assignees
- 90
- Inventors
- 257
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 2 | 3 |
| 2009 | 2 | 5 |
| 2010 | 1 | 5 |
| 2011 | 0 | 6 |
| 2012 | 3 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 4 |
| 2015 | 4 | 2 |
| 2016 | 1 | 2 |
| 2017 | 4 | 8 |
| 2018 | 5 | 6 |
| 2019 | 4 | 13 |
| 2020 | 3 | 9 |
| 2021 | 5 | 3 |
| 2022 | 6 | 8 |
| 2023 | 5 | 5 |
| 2024 | 5 | 6 |
| 2025 | 4 | 1 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recycled Material Based on in-situ compatibilization and chain extension and preparation method therefor30 Jun 2026US 12,668,694 B2China National Electric Apparatus Research Institute Co., Ltd.
- Temperature management of rubber mixtures discharged from a converging conical twin-screw mixer6 Jan 2026US 12,515,374 B2Compagnie Generale Des Etablissements Michelin
- Mixing and extrusion machine with self-cleaning twin screw and method of use30 Dec 2025US 12,508,742 B2Compagnie Generale Des Etablissements Michelin
- Production of rubber mixtures in a rubber mixture production line incorporating one or more twin-screw mixing and extrusion machines25 Nov 2025US 12,479,130 B2Compagnie Generale Des Etablissements Michelin
- Extruder having screw elements with a particularly large pitch in the region of the gas venting opening, and use of said extruder15 Jul 2025US 12,358,202 B2Covestro Intellectual Property GmbH & Co.KG
- Silicone manufacturing9 Jul 2026US 2026/0193416 A1Dow Global Technologies LLC
- Mixing device and electrode mixing method4 Jun 2026US 2026/0151748 A1Samsung SDI.Co., Ltd.
- Extruder23 Apr 2026US 2026/0108856 A1Samsung SDI.Co., Ltd.
- Screw extruder16 Apr 2026US 2026/0102945 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Process of dehalogenation of plastic materials including recycled ones, and use of one or more chemical compounds containing nitrogen as a dehalogenating agent of plastic materials including recycled ones20 Feb 2025US 2025/0059447 A1ENI S. p. A.
Most cited
By later US patents
- Shaped part for use as a construction material169US 6,022,615 A2000
- Process and device for producing moldings, in particular for structural elements, insulations and/or packaging, and moldings so obtained68US 5,916,503 A1999
- Method of producing an exfoliated polymer-clay nanocomposite through solid-state shear pulverization46US 7,223,359 B2Northwestern University · 2007
- Continuous extruder for thermosetting resins34US 4,025,058 ADai Nippon Toryo Co., Ltd. · 1977
- Pressure restricting means for a liquid outlet of an extruder30US 4,110,843 AWelding Engineers, Inc. · 1978