Rare metals as components of coatings in diagnostic test elements and methods of determining an amount/quality of dried compositions in such coatings
US-2016356765-A1 · Dec 8, 2016 · US
Metals
Metals · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N33/20 |
| Official title | Metals |
| Display label | Metals |
| Total patents | 383 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 27 |
| 2016 | 43 |
| 2017 | 55 |
| 2018 | 42 |
| 2019 | 47 |
| 2020 | 44 |
| 2021 | 29 |
| 2022 | 32 |
| 2023 | 22 |
| 2024 | 20 |
| 2025 | 18 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluorescent Metal Ion Indicators with Large Stokes Shifts
US-2016305964-A1 · Oct 20, 2016 · US
Method for determining wear of a connector contact using atom transfer radical polymerization
US-9465018-B1 · Oct 11, 2016 · US
Compound, and method for measuring iron concentration by using novel compound as chelate color former
US-9448244-B2 · Sep 20, 2016 · US
Measuring the rate of release of metal ions
US-9435745-B2 · Sep 6, 2016 · US
Sensor of species including toxins and chemical warfare agents
US-9429522-B2 · Aug 30, 2016 · US
Sensor for metal detection
US-2016238583-A1 · Aug 18, 2016 · US
Sensors
US-9404992-B2 · Aug 2, 2016 · US
Plasma Spectrochemical Analysis Method and Plasma Spectrochemical Analyzer
US-2016202187-A1 · Jul 14, 2016 · US
Methods and apparatus for detecting metals in liquids
US-9389181-B2 · Jul 12, 2016 · US
Method of resolving contribution ratio to soil contamination by plurality of polluters through sequential extraction scheme and stable isotope analysis scheme
US-2016187312-A1 · Jun 30, 2016 · US
Integrated security inspection system
US-2016189096-A1 · Jun 30, 2016 · US
Probe and method for detecting metal ions and chemical/biochemical molecules
US-2016178596-A1 · Jun 23, 2016 · US
Detecting stannous ions
US-2016178595-A1 · Jun 23, 2016 · US
Fluorescent metal ion indicators with large stokes shifts
US-9372181-B2 · Jun 21, 2016 · US
Coaxial video push-cables for use in inspection systems
US-2016173829-A1 · Jun 16, 2016 · US
Method of non-destructive evaluation of intergranular stress corrosion cracking (igssc) in structural components made of metal alloys, and the method of lifetime evaluation of the structural components
US-2016161395-A1 · Jun 9, 2016 · US
Detecting stannous ions
US-9354219-B1 · May 31, 2016 · US
Apparatus and method for the characterization of respirable aerosols
US-9354218-B2 · May 31, 2016 · US
Metamaterial device and uses thereof
US-2016131585-A1 · May 12, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N33/20?
- CPC G01N33/20 is the Cooperative Patent Classification code for “Metals.”
- How many patents are filed under CPC G01N33/20 (Metals)?
- Our database includes 383 publications tagged with this CPC code.
- Is patent activity under CPC G01N33/20 growing?
- Publication counts under this code: 20 in 2024 vs 18 in 2025 (latest complete years).