Class B28D : WORKING STONE OR STONE-LIKE MATERIALS
Subclass 1/26: Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor (fine working of gems, jewels, crystals B28D 5/00; working by grinding or polishing B24; devices or means for dressing or conditioning abrasive surfaces B24B 53/00) by impact tools, e.g. by chisels or other tools having a cutting edge (portable percussive machines B25D)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12264454 | Hammering device and a method for operating a hammering device | Dec 14, 21 | Apr 01, 25 | Fractum ApS |
| 11691204 | Drill for chiseling stone | Jun 20, 18 | Jul 04, 23 | Hilti Aktlengesellschaft |
| 11673246 | Flat chisel | Jul 31, 17 | Jun 13, 23 | Hilti Aktiengesellschaft |
| 11008730 | Reciprocating impact hammer | Oct 05, 16 | May 18, 21 | Terminator IP Limited |
| 10844571 | Method for manufacturing a stone retaining wall block | Apr 01, 19 | Nov 24, 20 | Not available |
| 10590668 | Powered tile breaker | Nov 14, 15 | Mar 17, 20 | Not available |
| 10239232 | Bolster | Aug 13, 15 | Mar 26, 19 | Not available |
| 10217535 | Device and method for removing contaminated material | Jun 05, 15 | Feb 26, 19 | EnBW Energie Baden-Württemberg AG |
| 10179424 | Diagnostic system for measuring acceleration of a demolition hammer | Oct 28, 15 | Jan 15, 19 | Caterpillar Inc. |
| 9943983 | Block splitter assembly and method of producing wall blocks | Sep 14, 16 | Apr 17, 18 | KEYSTONE RETAINING WALL SYSTEMS LLC |
| 9702153 | Accessory for a reciprocating saw | Feb 08, 13 | Jul 11, 17 | MILWAUKEE ELECTRIC TOOL CORPORATION |
| 9643337 | Block splitter assembly and method of producing wall blocks | Nov 20, 13 | May 09, 17 | KEYSTONE RETAINING WALL SYSTEMS LLC |
| 9573293 | Block splitting assembly and method | Sep 14, 12 | Feb 21, 17 | Anchor Wall Systems, Inc. |
| 9546488 | Speed striker multi-function masonry tool | Jun 12, 15 | Jan 17, 17 | Not available |
| 9333635 | Chisels | Dec 11, 14 | May 10, 16 | BLACK & DECKER INC. |
| 9206569 | Ice chopper assembly | Jun 05, 14 | Dec 08, 15 | Not available |
| 9095968 | Tool for breaking hammer, breaking hammer, and use thereof | Sep 12, 12 | Aug 04, 15 | SANDVIK MINING AND CONSTRUCTION OY |
| 9089995 | Isolator plate assembly for rock breaking device | Nov 21, 11 | Jul 28, 15 | Not available |
| 9085074 | Chisels | Mar 21, 12 | Jul 21, 15 | BLACK & DECKER INC. |
| 9061438 | Device and method for artificial aging of stones | Oct 16, 12 | Jun 23, 15 | Baustoffwerke Gebhart & Sohne GmbH & Co. KG |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0118,812 | TOOL FOR BREAKING ROCKS | Jan 20, 21 | Apr 20, 23 | Not available |
| 2014/0102,433 | MAGNETIZED PICK AXE AND METHOD OF FORMING SAME | Oct 16, 12 | Apr 17, 14 | Not available |
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