Apparatus and method for processing optical workpieces
US-12594641-B2 · Apr 7, 2026 · US
comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B24D13/147 |
| Official title | {comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material} |
| Display label | comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 9 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 13 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Attachment hub, backup pad, and abrasive disc
US-12275117-B2 · Apr 15, 2025 · US
Conformable abrasive article
US-2025018536-A1 · Jan 16, 2025 · US
Conformable abrasive article
US-12128526-B2 · Oct 29, 2024 · US
Polishing device, polishing method, and recording medium for recording program for determining supply position of polishing liquid
US-11980998-B2 · May 14, 2024 · US
Method for machining a workpiece in the production of an optical element
US-11980990-B2 · May 14, 2024 · US
Grinding disc and substrate cleaning device
US-2024042572-A1 · Feb 8, 2024 · US
Tool holder, processing tool, tool spindle and method for processing optical work-pieces
US-2023373052-A1 · Nov 23, 2023 · US
Automatic wet sanding apparatus
US-11745308-B2 · Sep 5, 2023 · US
Automatic wet sanding apparatus
US-11701752-B2 · Jul 18, 2023 · US
Automatic wet sanding apparatus
US-11685020-B2 · Jun 27, 2023 · US
Automatic wet sanding apparatus
US-11642750-B2 · May 9, 2023 · US
Metallographic grinder and components thereof
US-11397139-B2 · Jul 26, 2022 · US
Polishing pad
US-11383352-B2 · Jul 12, 2022 · US
Apparatus and method for processing optical workpieces
US-2022040811-A1 · Feb 10, 2022 · US
Attachment hub, backup pad, and abrasive disc
US-2022040813-A1 · Feb 10, 2022 · US
Double-sided polishing or sanding member for attachment to a hand-guided power tool and power tool with such a polishing or sanding member
US-2021308824-A1 · Oct 7, 2021 · US
Automatic wet sanding apparatus
US-2021276148-A1 · Sep 9, 2021 · US
Automatic wet sanding apparatus
US-2021276149-A1 · Sep 9, 2021 · US
Automatic wet sanding apparatus
US-2021276151-A1 · Sep 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B24D13/147?
- CPC B24D13/147 is the Cooperative Patent Classification code for “comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material.”
- How many patents are filed under CPC B24D13/147 (comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B24D13/147 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).