B28C 7/0477
By using conveyor screws
Official title: {by using conveyor screws}
B28C7/0477 (By using conveyor screws) appears on 6 US grants and 8 published applications in this corpus.
Search patents in B28C- Granted patents
- 6
- Published applications
- 8
- Assignees
- 3
- Inventors
- 15
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 3 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Portable warm asphalt preparation apparatus and process for the production of warm asphalt30 Sep 2025US 12,428,790 B2Walter Sisulu University
- Independent control of auger and hopper assembly in electric blender system26 Dec 2023US 11,850,563 B2U.S. Well Services, LLC
- Mobile continuous mixing apparatus with linearly aligned feed belts5 Dec 2023US 11,833,714 B2
- Independent control of auger and hopper assembly in electric blender system5 Sep 2023US 11,745,155 B2U.S. Well Services, LLC
- Independent control of auger and hopper assembly in electric blender system19 Mar 2019US 10,232,332 B2U.S. Well Services, LLC
- Independent control of auger and hopper assembly in electric blender system25 Jul 2024US 2024/0246049 A1U.S. Well Services, LLC
- Portable warm asphalt preparation apparatus and process for the production of warm asphalt9 May 2024US 2024/0150976 A1Walter Sisulu University
- Mobile Continuous Mixing Apparatus22 Jun 2023US 2023/0191659 A1
- Independent control of auger and hopper assembly in electric blender system13 Jan 2022US 2022/0008879 A1U.S. Well Services, LLC
- Independent control of auger and hopper assembly in electric blender system13 Feb 2020US 2020/0047141 A1U.S. Well Services, LLC
Most cited
By later US patents
- Independent control of auger and hopper assembly in electric blender system63US 10,232,332 B2U.S. Well Services, LLC · 2019
- Process and apparatus for the preparation of mortars32US 4,855,960 A1989
- Independent control of auger and hopper assembly in electric blender system2US 11,745,155 B2U.S. Well Services, LLC · 2023
- Mobile continuous mixing apparatus with linearly aligned feed belts1US 11,833,714 B22023