B28D
Working stone or stone-like materials
B28D (Working stone or stone-like materials) appears on 4,393 US grants and 4,110 published applications in this corpus.
Search patents in B28D- Granted patents
- 4,393
- Published applications
- 4,110
- Assignees
- 1,698
- Inventors
- 7,492
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 33 | 0 |
| 1978 | 39 | 0 |
| 1979 | 36 | 0 |
| 1980 | 50 | 0 |
| 1981 | 32 | 0 |
| 1982 | 36 | 0 |
| 1983 | 23 | 0 |
| 1984 | 38 | 0 |
| 1985 | 44 | 0 |
| 1986 | 42 | 0 |
| 1987 | 53 | 0 |
| 1988 | 56 | 0 |
| 1989 | 63 | 0 |
| 1990 | 84 | 0 |
| 1991 | 71 | 0 |
| 1992 | 68 | 0 |
| 1993 | 60 | 0 |
| 1994 | 61 | 0 |
| 1995 | 53 | 0 |
| 1996 | 63 | 0 |
| 1997 | 60 | 0 |
| 1998 | 84 | 0 |
| 1999 | 85 | 0 |
| 2000 | 110 | 0 |
| 2001 | 112 | 37 |
| 2002 | 116 | 97 |
| 2003 | 100 | 137 |
| 2004 | 104 | 128 |
| 2005 | 95 | 150 |
| 2006 | 102 | 165 |
| 2007 | 77 | 186 |
| 2008 | 83 | 173 |
| 2009 | 81 | 167 |
| 2010 | 113 | 196 |
| 2011 | 127 | 164 |
| 2012 | 99 | 151 |
| 2013 | 136 | 180 |
| 2014 | 137 | 163 |
| 2015 | 140 | 198 |
| 2016 | 141 | 181 |
| 2017 | 144 | 178 |
| 2018 | 122 | 214 |
| 2019 | 169 | 177 |
| 2020 | 158 | 156 |
| 2021 | 118 | 177 |
| 2022 | 111 | 168 |
| 2023 | 107 | 165 |
| 2024 | 111 | 167 |
| 2025 | 127 | 137 |
| 2026 | 94 | 98 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Machine for processing slabs6 Oct 2026US 12,752,460 B2
- Electrical work apparatus29 Sep 2026US 12,746,708 B2Andreas Stihl AG & CO.KG
- Manufacturing method of gallium nitride substrate22 Sep 2026US 12,741,340 B2Disco Corporation
- Method for producing a detachment region in a solid-state body22 Sep 2026US 12,741,341 B2Siltectra GmbH
- Non-rotating bit for cutting tool22 Sep 2026US 12,741,396 B2Caterpillar Paving Products Inc.
- Substrate production method and chip production method8 Oct 2026US 2026/0314344 A1Disco Corporation
- Method for Separating a Layer of Solid Material from a Workpiece8 Oct 2026US 2026/0314345 A1Siltectra GmbH
- Machining assembly1 Oct 2026US 2026/0295685 A1Tractive AB
- Method for simultaneously slicing a multiplicity of slices from a workpiece by means of a wire saw1 Oct 2026US 2026/0295901 A1
- Material removal manufacture, assembly, and method of assembly1 Oct 2026US 2026/0297868 A1Dynatech Systems, Inc.
Most cited
By later US patents
- Process for the production of thin semiconductor material films1,233US 5,374,564 ACommissariat A L' Energie Atomique · 1994
- Composite polycrystalline diamond compact502US 4,604,106 ASmith International, Inc. · 1986
- Manual tool for removing material from brittle and/or non-ductile stock416US 5,733,074 AHilti Aktiengesellschaft · 1998
- Cutting elements for rotary drill bits409US 5,135,061 A1992
- Process for producing semiconductor article392US 6,534,382 B1Canon Kabushiki Kaisha · 2003