B24B 21/02
Machines or devices using grinding or polishing belts: for grinding rotationally symmetrical
Official title: for grinding rotationally symmetrical surfaces
B24B21/02 (Machines or devices using grinding or polishing belts: for grinding rotationally symmetrical) appears on 109 US grants and 65 published applications in this corpus.
Search patents in B24B- Granted patents
- 109
- Published applications
- 65
- Assignees
- 89
- Inventors
- 185
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 3 |
| 2002 | 4 | 2 |
| 2003 | 5 | 3 |
| 2004 | 3 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 3 | 3 |
| 2008 | 3 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 5 |
| 2011 | 1 | 1 |
| 2012 | 4 | 0 |
| 2013 | 2 | 4 |
| 2014 | 1 | 2 |
| 2015 | 4 | 4 |
| 2016 | 2 | 2 |
| 2017 | 3 | 5 |
| 2018 | 4 | 4 |
| 2019 | 4 | 4 |
| 2020 | 2 | 0 |
| 2021 | 1 | 5 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cylinder device and method of manufacturing piston rod17 Mar 2026US 12,576,468 B2Hitachi Astemo, Ltd.
- Machining unit and method for machining a component10 Mar 2026US 12,571,430 B2Aktiebolaget Skf
- Safety guards and equipment for use in the preparation of test specimens17 Sep 2024US 12,090,603 B2Ecolab USA Inc.
- Outer diameter cleaning and sanding drill attachment10 Sep 2024US 12,083,650 B2
- Crankshaft and method of manufacturing the same29 Aug 2023US 11,739,788 B2Nippon Steel Corporation
- Method of manufacturing piston rod25 Jun 2026US 2026/0175346 A1Astemo, Ltd.
- Method for manufacturing sliding member, method for manufacturing damper, sliding member, damper, and method for adjusting ride comfort10 Jul 2025US 2025/0224013 A1KYB Corporation
- A machining device1 May 2025US 2025/0135597 A1
- Outer Diameter Cleaning and Sanding Tube28 Nov 2024US 2024/0391045 A1
- Transportable compact correction device in particular for polishing calendering cylinders18 Apr 2024US 2024/0123569 A1Compagnie Generale Des Etablissements Michelin
Most cited
By later US patents
- Microfinishing apparatus and method33US 4,682,444 AIndustrial Metal Products Corporation · 1987
- Microfinishing machine31US 5,951,377 ARadtec, Inc. · 1999
- Machine for grinding-polishing of a water edge26US 6,629,875 B2Accretech USA, Inc. · 2003
- Active polishing of rotatable article surfaces19US 6,220,946 B12001
- Method and apparatus for automatically buffing a golf ball18US 4,779,387 AAcushnet Company · 1988