Photonic crystal micropatterns and anti-counterfeiting films, methods of making, and methods of use
US-12552909-B2 · Feb 17, 2026 · US
using chemical means
using chemical means · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G07D7/14 |
| Official title | using chemical means |
| Display label | using chemical means |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nucleic acid taggants
US-12286674-B2 · Apr 29, 2025 · US
Counterfeit Note Detection Via Machine Olfaction Chemical Analysis
US-2025118129-A1 · Apr 10, 2025 · US
Methods and compositions for molecular authentication
US-12142104-B2 · Nov 12, 2024 · US
Photonic crystal micropatterns and anti-counterfeiting films, methods of making, and methods of use
US-2023203264-A1 · Jun 29, 2023 · US
Document fraud detection
US-11631269-B1 · Apr 18, 2023 · US
Photothermally Responsive Melanin-Based Nanocomposltes
US-2022267627-A1 · Aug 25, 2022 · US
Nucleic Acid Taggants
US-2022251649-A1 · Aug 11, 2022 · US
Nucleic acid taggants
US-11345963-B2 · May 31, 2022 · US
Counterfeit detection apparatus
US-11302155-B2 · Apr 12, 2022 · US
Counterfeit Detection Apparatus
US-2021134127-A1 · May 6, 2021 · US
Methods and compositions for molecular authentication
US-2021019973-A1 · Jan 21, 2021 · US
Counterfeit detection apparatus
US-10867484-B2 · Dec 15, 2020 · US
Document fraud detection
US-10733435-B1 · Aug 4, 2020 · US
Tamper-evident materials, adhesives, seals, and containers
US-2020165038-A1 · May 28, 2020 · US
Method of making fibers with chemical markers and physical features used for coding
US-10527593-B2 · Jan 7, 2020 · US
Nucleic acid taggants
US-2019338354-A1 · Nov 7, 2019 · US
Document fraud detection
US-10452908-B1 · Oct 22, 2019 · US
Counterfeit Detection Apparatus
US-2019279469-A1 · Sep 12, 2019 · US
Counterfeit detection apparatus
US-10311682-B1 · Jun 4, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G07D7/14?
- CPC G07D7/14 is the Cooperative Patent Classification code for “using chemical means.”
- How many patents are filed under CPC G07D7/14 (using chemical means)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC G07D7/14 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).