Head encapsulation unit
US-2021331002-A1 · Oct 28, 2021 · US
Gas helmets
Gas helmets · 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 | A62B18/04 |
| Official title | Gas helmets |
| Display label | Gas helmets |
| Total patents | 129 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 9 |
| 2019 | 13 |
| 2020 | 13 |
| 2021 | 20 |
| 2022 | 13 |
| 2023 | 11 |
| 2024 | 9 |
| 2025 | 15 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Filter and Mask
US-2020406071-A1 · Dec 31, 2020 · US
Respirator Mask with Eyewear Interface
US-2020391057-A1 · Dec 17, 2020 · US
In-mask feedback system
US-10864392-B2 · Dec 15, 2020 · US
In-mask feedback system
US-2020353295-A1 · Nov 12, 2020 · US
Helmet for anesthesia
US-10799727-B2 · Oct 13, 2020 · US
Full hood respirator
US-10799726-B2 · Oct 13, 2020 · US
Programmable Accountability Alert System
US-2020306567-A1 · Oct 1, 2020 · US
Portable breathing equipment and related methods
US-2020298029-A1 · Sep 24, 2020 · US
Head protection device and respirator device
US-10765894-B2 · Sep 8, 2020 · US
Respiratory equipment for aircraft pilot with no face contact
US-2020215360-A1 · Jul 9, 2020 · US
Sensor module for a protective head top
US-2020146384-A1 · May 14, 2020 · US
Personal protective equipment system with sensor module for a protective head top
US-10575579-B2 · Mar 3, 2020 · US
Personal protection system including a helmet with a sensor
US-2020001123-A1 · Jan 2, 2020 · US
Protection and respiratory equipment for aircraft pilot and individual user
US-2019374796-A1 · Dec 12, 2019 · US
Full hood respirator
US-10500425-B2 · Dec 10, 2019 · US
Medical/surgical personal protection system including a material or insert for providing improved transmission of sound
US-10449397-B2 · Oct 22, 2019 · US
Resonance wireless power enabled personal protection equipment
US-10374661-B2 · Aug 6, 2019 · US
Facemask Nosecup Retained by Voicemitters
US-2019209874-A1 · Jul 11, 2019 · US
Temperature-control device for heating and/or cooling gases or gas mixtures preferably for the use in the field of respiratory protection
US-2019175959-A1 · Jun 13, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A62B18/04?
- CPC A62B18/04 is the Cooperative Patent Classification code for “Gas helmets.”
- How many patents are filed under CPC A62B18/04 (Gas helmets)?
- Our database includes 129 publications tagged with this CPC code.
- Is patent activity under CPC A62B18/04 growing?
- Publication counts under this code: 9 in 2024 vs 15 in 2025 (latest complete years).