Multi-layer body and method for the production thereof
US-10850551-B2 · Dec 1, 2020 · US
using chemical means, e.g. etching
using chemical means, e.g. etching · 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 | B42D25/445 |
| Official title | using chemical means, e.g. etching |
| Display label | using chemical means, e.g. etching |
| Total patents | 107 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 8 |
| 2017 | 9 |
| 2018 | 24 |
| 2019 | 11 |
| 2020 | 6 |
| 2021 | 14 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 10 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing security elements having a lenticular flip
US-10850552-B2 · Dec 1, 2020 · US
Diffractive security device and method of manufacture thereof
US-10710392-B2 · Jul 14, 2020 · US
Multilayer optical film, method of making the same, and transaction card having the same
US-2020217989-A1 · Jul 9, 2020 · US
Identification document with tactile feature
US-10675904-B2 · Jun 9, 2020 · US
Laminate comprising a relief structure forming layer and a manufacturing method for same
US-10518500-B2 · Dec 31, 2019 · US
Identification method and identification medium
US-10482370-B2 · Nov 19, 2019 · US
Security devices and methods of manufacturing image patterns for security devices
US-2019322117-A1 · Oct 24, 2019 · US
Methods of manufacturing an image pattern for a security device
US-2019291498-A1 · Sep 26, 2019 · US
Identification document with contoured surface image
US-10363768-B2 · Jul 30, 2019 · US
Method for Producing Security Elements Having a Lenticular Flip
US-2019152251-A1 · May 23, 2019 · US
Synthesis of superposition shape images by light interacting with layers of lenslets
US-10286716-B2 · May 14, 2019 · US
Security elements and methods of their manufacture
US-10252562-B2 · Apr 9, 2019 · US
Counterfeit prevention structure and manufacturing method therefor
US-2019086588-A1 · Mar 21, 2019 · US
Security devices
US-2019039400-A1 · Feb 7, 2019 · US
Method for producing a film element
US-10179472-B2 · Jan 15, 2019 · US
Identification document with tactile feature
US-2018339541-A1 · Nov 29, 2018 · US
Process for Producing a Multilayer Body, and Multilayer Body
US-2018326775-A1 · Nov 15, 2018 · US
Synthesis of superpostion shape images by light interacting with superposed layers of lenslet gratings
US-2018311990-A1 · Nov 1, 2018 · US
Method for Producing a Multilayer Element, and Multilayer Element
US-2018304667-A1 · Oct 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B42D25/445?
- CPC B42D25/445 is the Cooperative Patent Classification code for “using chemical means, e.g. etching.”
- How many patents are filed under CPC B42D25/445 (using chemical means, e.g. etching)?
- Our database includes 107 publications tagged with this CPC code.
- Is patent activity under CPC B42D25/445 growing?
- Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).