B24D
Tools for grinding, buffing or sharpening
Official title: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)
B24D (Tools for grinding, buffing or sharpening) appears on 7,180 US grants and 5,993 published applications in this corpus.
Search patents in B24D- Granted patents
- 7,180
- Published applications
- 5,993
- Assignees
- 2,087
- Inventors
- 10,361
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 55 | 0 |
| 1977 | 58 | 0 |
| 1978 | 56 | 0 |
| 1979 | 42 | 0 |
| 1980 | 67 | 0 |
| 1981 | 62 | 0 |
| 1982 | 42 | 0 |
| 1983 | 41 | 0 |
| 1984 | 49 | 0 |
| 1985 | 90 | 0 |
| 1986 | 73 | 0 |
| 1987 | 86 | 0 |
| 1988 | 86 | 0 |
| 1989 | 108 | 0 |
| 1990 | 110 | 0 |
| 1991 | 117 | 0 |
| 1992 | 136 | 0 |
| 1993 | 139 | 0 |
| 1994 | 123 | 0 |
| 1995 | 131 | 0 |
| 1996 | 173 | 0 |
| 1997 | 171 | 0 |
| 1998 | 142 | 0 |
| 1999 | 186 | 0 |
| 2000 | 221 | 0 |
| 2001 | 262 | 96 |
| 2002 | 238 | 228 |
| 2003 | 233 | 252 |
| 2004 | 214 | 237 |
| 2005 | 169 | 242 |
| 2006 | 172 | 228 |
| 2007 | 149 | 268 |
| 2008 | 113 | 223 |
| 2009 | 96 | 240 |
| 2010 | 97 | 217 |
| 2011 | 139 | 245 |
| 2012 | 138 | 245 |
| 2013 | 189 | 284 |
| 2014 | 221 | 310 |
| 2015 | 248 | 333 |
| 2016 | 212 | 277 |
| 2017 | 246 | 251 |
| 2018 | 249 | 256 |
| 2019 | 252 | 269 |
| 2020 | 170 | 232 |
| 2021 | 146 | 220 |
| 2022 | 137 | 193 |
| 2023 | 158 | 212 |
| 2024 | 150 | 194 |
| 2025 | 137 | 139 |
| 2026 | 81 | 102 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- B24D 3/00Physical features of abrasive bodies, or sheets2,770
- B24D 18/00Manufacture of grinding tools or other grinding devices1,711
- B24D 11/00Constructional features of flexible abrasive materials1,384
- B24D 15/00Hand tools or other devices for non-rotary grinding, polishing, or stropping1,064
- B24D 13/00Wheels having flexibly-acting working parts892
- B24D 7/00Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting875
- B24D 5/00Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting796
- B24D 9/00Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive502
All 12 main groupsShow fewer
Recent patents
- Abrasive articles and methods and systems for generating and using the same6 Oct 2026US 12,752,398 B2Abrasive Technology, Inc.
- Composite abrasive paper6 Oct 2026US 12,752,399 B2Shaoxing Ziyuan Polishing Co., Ltd.
- Fluid dispensing device with coupling to power-driven turning tools and turning tool comprising the same29 Sep 2026US 12,746,630 B2
- Multi-pattern in-pad surface for polish rate control22 Sep 2026US 12,741,357 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Method for producing abrasive particles15 Sep 2026US 12,735,614 B2Tyrolit Schleifmittelwerke Swarovski K.G.
- Sanding pad having a sealing element and a rib structure, and sanding machine8 Oct 2026US 2026/0307197 A1Festool GmbH
- Polishing pad conditioner manufacturing method8 Oct 2026US 2026/0307206 A1Nippon Alloy co., Ltd.
- Mold, forming method and related abrasive wheel8 Oct 2026US 2026/0307210 A1Industria Abrasivi Parmense - Globe Societa' A Responsabilita' Limitata
- System and Method for Sharpening a Blade with a Blade Sharpening Apparatus1 Oct 2026US 2026/0295775 A1Sharpal, Inc.
- Device and method to improve as-cast inner surface quality in cast parts24 Sep 2026US 2026/0284833 A1GM Global Technology Operations LLC
Most cited
By later US patents
- Controlled electro-pneumatic power tools and interactive consumable1,078US 9,061,392 B22015
- Structured abrasive article552US 5,152,917 AMinnesota Mining and Manufacturing Company · 1992
- Composite polycrystalline diamond compact502US 4,604,106 ASmith International, Inc. · 1986
- Cutting composite formed of cemented carbide substrate and diamond layer481US 5,120,327 ADiamant Boart-Stratabit (USA) Inc. · 1992
- Erodable agglomerates and abrasive products containing the same478US 4,799,939 AMinnesota Mining and Manufacturing Company · 1989