One-time-open microfluidic valves
US-2025325982-A1 · Oct 23, 2025 · US
using radiation
using radiation · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16K99/004 |
| Official title | {using radiation} |
| Display label | using radiation |
| Total patents | 32 |
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 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 11 |
| 2020 | 2 |
| 2021 | 4 |
| 2022 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Centrifugal cassette with molded insertable valves
US-12326200-B2 · Jun 10, 2025 · US
Motion element
US-2025101964-A1 · Mar 27, 2025 · US
Burstable liquid storage package for biological materials and valve substitution
US-2022331802-A1 · Oct 20, 2022 · US
Chip, mixing device, and mixing method
US-11448332-B2 · Sep 20, 2022 · US
Microfluidic movement control method utilizing light
US-11396014-B2 · Jul 26, 2022 · US
Centrifugal Cassette with Molded Insertable Valves
US-2022112967-A1 · Apr 14, 2022 · US
Micro electrical mechanical system (MEMS) valve
US-11187349-B2 · Nov 30, 2021 · US
Hose with tunable flexibility using cyclizable, photochromic molecules
US-11143332-B2 · Oct 12, 2021 · US
Hose with tunable flexibility using cyclizable, photochromic molecules
US-10927976-B2 · Feb 23, 2021 · US
Chip, mixing device, and mixing method
US-2021010606-A1 · Jan 14, 2021 · US
Thin film valve apparatus using a fluid hole closing membrane
US-10682646-B2 · Jun 16, 2020 · US
Microfluidics valve
US-2020030799-A1 · Jan 30, 2020 · US
Hose with tunable flexibility using cyclizable, photochromic molecules
US-2019376618-A1 · Dec 12, 2019 · US
Micro electrical mechanical system (mems) valve
US-2019323627-A1 · Oct 24, 2019 · US
Hose with tunable flexibility using cyclizable, photochromic molecules
US-10451195-B2 · Oct 22, 2019 · US
Hose with tunable flexibility using cyclizable, photochromic molecules
US-2019285195-A1 · Sep 19, 2019 · US
Micro electrical mechanical system (MEMS) valve
US-10415721-B2 · Sep 17, 2019 · US
Microfluidic Movement Control Method Utilizing Light
US-2019232278-A1 · Aug 1, 2019 · US
Thin film valve apparatus using a fluid hole closing membrane
US-2019232285-A1 · Aug 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K99/004?
- CPC F16K99/004 is the Cooperative Patent Classification code for “using radiation.”
- How many patents are filed under CPC F16K99/004 (using radiation)?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC F16K99/004 growing?
- Publication counts under this code: 4 in 2022 vs 3 in 2025 (latest complete years).