Horizontal flat-fold filtering face-piece respirator having indicia of symmetry
US-9826786-B2 · Nov 28, 2017 · US
for respirators
for respirators · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A62B23/02 |
| Official title | for respirators |
| Display label | for respirators |
| Total patents | 442 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 23 |
| 2017 | 28 |
| 2018 | 18 |
| 2019 | 18 |
| 2020 | 29 |
| 2021 | 61 |
| 2022 | 57 |
| 2023 | 72 |
| 2024 | 71 |
| 2025 | 38 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wearable air purification device
US-2017333737-A1 · Nov 23, 2017 · US
Adsorbent materials and methods of making and use thereof
US-2017296849-A1 · Oct 19, 2017 · US
Air filtration device
US-9744493-B2 · Aug 29, 2017 · US
Mask coupling apparatus
US-2017181491-A1 · Jun 29, 2017 · US
Metal organic frameworks for the catalytic detoxification of chemical warfare nerve agents
US-2017128761-A1 · May 11, 2017 · US
Particle filter as well as method for the manufacture thereof
US-2017120177-A1 · May 4, 2017 · US
Deodorizing mask
US-2017100503-A1 · Apr 13, 2017 · US
Filtering face-piece respirator with stiffening member integral with filtering structure
US-9615612-B2 · Apr 11, 2017 · US
Filtering face-piece respirator having darted mask body
US-9603395-B2 · Mar 28, 2017 · US
System and method for monitoring a service life of a filter with a respirator filter sampling port assembly
US-2017080261-A1 · Mar 23, 2017 · US
Breathing apparatus, and method for controlling temperature fluctuations
US-9597532-B2 · Mar 21, 2017 · US
Sleeve-Fit Respirator Cartridge
US-2017072232-A1 · Mar 16, 2017 · US
Filtering face respirator having optimized facial filter location
US-2017050057-A1 · Feb 23, 2017 · US
Respirator and head-mounted protective apparatus
US-2017050056-A1 · Feb 23, 2017 · US
Smart respirator and method and device for calculating pollutant absorption
US-2017028228-A1 · Feb 2, 2017 · US
Smart mask, method, smart mask and apparatus for calculating pollutant absorption quantity
US-2017028231-A1 · Feb 2, 2017 · US
Layered Or Mixed Sorbent Bed Protective Filtration Device
US-2016361679-A1 · Dec 15, 2016 · US
Method and apparatus for integrating chemical and environmental sensors into an air purification filter through a reusable sensor post
US-2016354718-A1 · Dec 8, 2016 · US
Sleeve-fit respirator cartridge
US-9510626-B2 · Dec 6, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A62B23/02?
- CPC A62B23/02 is the Cooperative Patent Classification code for “for respirators.”
- How many patents are filed under CPC A62B23/02 (for respirators)?
- Our database includes 442 publications tagged with this CPC code.
- Is patent activity under CPC A62B23/02 growing?
- Publication counts under this code: 71 in 2024 vs 38 in 2025 (latest complete years).