Intrinsically safe circuit arrangement
US-2019386486-A1 · Dec 19, 2019 · US
Intrinsically safe circuits
Intrinsically safe circuits · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02H9/008 |
| Official title | {Intrinsically safe circuits} |
| Display label | Intrinsically safe circuits |
| Total patents | 167 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 10 |
| 2017 | 17 |
| 2018 | 9 |
| 2019 | 24 |
| 2020 | 19 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 19 |
| 2024 | 15 |
| 2025 | 14 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Integration of sensor components with light fixtures in hazardous environments
US-10480765-B2 · Nov 19, 2019 · US
Automatically restarting a voltage foldback circuit
US-10429866-B2 · Oct 1, 2019 · US
Electronic device and surge handling
US-2019295750-A1 · Sep 26, 2019 · US
Method and safety circuit for safe limiting of electrical power consumption
US-2019293452-A1 · Sep 26, 2019 · US
Safety protection circuit
US-10418806-B2 · Sep 17, 2019 · US
Apparatus and method for testing electromagnetic interference devices within a line replaceable unit
US-2019241284-A1 · Aug 8, 2019 · US
Input protection circuit
US-2019165569-A1 · May 30, 2019 · US
Intrinsic safety (is) barriers mountable on terminal blocks of input/output (i/o) modules or other devices
US-2019123548-A1 · Apr 25, 2019 · US
Electronic device with output energy limiting function
US-2019115750-A1 · Apr 18, 2019 · US
Bus coupler for coupling field devices
US-10236864-B2 · Mar 19, 2019 · US
Method and apparatus to reduce communication device peak current
US-10230414-B1 · Mar 12, 2019 · US
Intrinsic safety (is) barrier with associated energy limiting apparatus
US-2019056708-A1 · Feb 21, 2019 · US
Universal isolator
US-2019052036-A1 · Feb 14, 2019 · US
Methods and apparatus for surge protection of a distributed control system component
US-2019044325-A1 · Feb 7, 2019 · US
Automatically restarting a voltage foldback circuit
US-2018373282-A1 · Dec 27, 2018 · US
System and method for limting currents in a power distribution system
US-2018375505-A1 · Dec 27, 2018 · US
Method and device for supplying energy to a low-voltage load
US-10056843-B2 · Aug 21, 2018 · US
Explosion-proof device
US-2018131177-A1 · May 10, 2018 · US
Energy limiting barrier for universal io in intrisically safe industrial applications
US-2018101156-A1 · Apr 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02H9/008?
- CPC H02H9/008 is the Cooperative Patent Classification code for “Intrinsically safe circuits.”
- How many patents are filed under CPC H02H9/008 (Intrinsically safe circuits)?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC H02H9/008 growing?
- Publication counts under this code: 15 in 2024 vs 14 in 2025 (latest complete years).