B02C 23/32
With return of oversize material to crushing or disintegrating zone
Official title: with return of oversize material to crushing or disintegrating zone (B02C23/34 takes precedence)
B02C23/32 (With return of oversize material to crushing or disintegrating zone) appears on 93 US grants and 32 published applications in this corpus.
Search patents in B02C- Granted patents
- 93
- Published applications
- 32
- Assignees
- 50
- Inventors
- 167
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 6 |
| 2018 | 1 | 2 |
| 2019 | 3 | 3 |
| 2020 | 3 | 4 |
| 2021 | 3 | 1 |
| 2022 | 2 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Dry preparation of kaolin in the production of HPA5 Dec 2023US 11,833,520 B2SMS group GmbH
- Classifier, pulverizing and classifying device, and pulverized coal burning boiler28 Feb 2023US 11,590,510 B2Mitsubishi Heavy Industries, Ltd.
- Method and device for milling and separation of solids and granular materials including metal containing materials as well as phytogenic materials with high level of silicon in a controlled airflow28 Jun 2022US 11,369,973 B2Eco Tec Mineria Corp.
- System, method and apparatus for controlling the flow distribution of solid particles26 Apr 2022US 11,311,887 B2General Electric Technology GmbH
- Method and system for precision spheroidisation of graphite11 May 2021US 11,000,857 B2Syrah Resources
- Glass powder production process and glass powder production device27 Mar 2025US 2025/0099974 A1
- Method and device for milling and separation of solids and granular materials including metal containing materials as well as phytogenic materials with high level of silicon in a controlled airflow8 Sep 2022US 2022/0280950 A1
- Dry preparation of kaolin in the production of HPA26 Aug 2021US 2021/0260597 A1SMS group GmbH
- Dehydration and Disintegration Apparatus and System24 Dec 2020US 2020/0398284 A1
- Method and system for precision spheroidisation of graphite5 Nov 2020US 2020/0346221 A1Syrah Resources
Most cited
By later US patents
- Method and apparatus for the dry grinding of solids43US 5,695,130 A1997
- Apparatus for comminuting waste materials38US 4,687,144 AIrwin Research and Development, Inc. · 1987
- Sifter for sifting granular material and grinding system with insertion of such a sifter37US 5,392,998 AKloeckner-Humboldt-Deutz AG · 1995
- Apparatus for pulverizing and drying particulate matter36US 6,443,376 B1Hosokawa Micron Powder Systems · 2002
- Classifier vane for coal mills34US 5,957,300 ASure Alloy Steel Corporation · 1999