B04B 11/08
Skimmers or scrapers for discharging
Official title: Skimmers or scrapers for discharging {; Regulating thereof}
B04B11/08 (Skimmers or scrapers for discharging) appears on 177 US grants and 103 published applications in this corpus.
Search patents in B04B- Granted patents
- 177
- Published applications
- 103
- Assignees
- 80
- Inventors
- 222
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 2 |
| 2003 | 5 | 6 |
| 2004 | 5 | 4 |
| 2005 | 2 | 6 |
| 2006 | 8 | 2 |
| 2007 | 1 | 5 |
| 2008 | 1 | 7 |
| 2009 | 2 | 3 |
| 2010 | 1 | 4 |
| 2011 | 7 | 1 |
| 2012 | 1 | 3 |
| 2013 | 2 | 4 |
| 2014 | 1 | 4 |
| 2015 | 4 | 5 |
| 2016 | 4 | 3 |
| 2017 | 2 | 3 |
| 2018 | 5 | 2 |
| 2019 | 3 | 5 |
| 2020 | 6 | 4 |
| 2021 | 4 | 7 |
| 2022 | 3 | 9 |
| 2023 | 4 | 3 |
| 2024 | 3 | 5 |
| 2025 | 7 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter for a treatment apparatus21 Apr 2026US 12,605,658 B2Fresh Works Ltd
- Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials25 Nov 2025US 12,480,255 B2Pierson Capital Environmental (Beijing) Limited
- Centrifuge system for separating cells in suspension4 Nov 2025US 12,458,985 B2Pneumatic Scale Corporation
- Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials30 Sep 2025US 12,428,785 B2Pierson Capital Environmental (Beijing) Limited
- Centrifuge system for separating cells in suspension5 Aug 2025US 12,377,423 B2Pneumatic Scale Corporation
- Filter for a treatment apparatus6 Aug 2026US 2026/0225010 A1Fresh Works Ltd
- Centrifuge system for separating cells in suspension26 Feb 2026US 2026/0054272 A1Pneumatic Scale Corporation
- Centrifugal solids-liquid separator system19 Feb 2026US 2026/0048348 A1
- Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials6 Nov 2025US 2025/0341054 A1Pierson Capital Environmental (Beijing) Limited
- Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials3 Jul 2025US 2025/0215642 A1Pierson Capital Environmental (Beijing) Limited
Most cited
By later US patents
- Centrifugal separator49US 5,779,619 AAlfa-Laval AB · 1998
- Centrifuges38US 4,334,647 ABird Machine Company, Inc. · 1982
- Three-phase rotary separator33US 5,750,040 ABiphase Energy Company · 1998
- Oil recovering apparatus from used lubricant31US 5,250,180 AFWU Kuang Enterprises Co., Ltd. · 1993
- Centrifugal separator apparatus having a vibration sensor30US 5,879,279 AU.S. Centrifuge · 1999