Portable ionization unit for attachment to an overhead airflow nozzle
US-12138637-B2 · Nov 12, 2024 · US
having pointed electrodes
having pointed electrodes · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01T19/04 |
| Official title | having pointed electrodes |
| Display label | having pointed electrodes |
| Total patents | 241 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 25 |
| 2017 | 20 |
| 2018 | 32 |
| 2019 | 20 |
| 2020 | 23 |
| 2021 | 25 |
| 2022 | 19 |
| 2023 | 23 |
| 2024 | 22 |
| 2025 | 11 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Static eliminator and ion balance control method
US-2024079857-A1 · Mar 7, 2024 · US
Ion generation apparatus and electric equipment including the same
US-2017316910-A1 · Nov 2, 2017 · US
Low power threshold integrated micro-plasma limiter
US-9774067-B2 · Sep 26, 2017 · US
High voltage generation circuit
US-2017257036-A1 · Sep 7, 2017 · US
Corona ignition device with wire ignition tips
US-2017237237-A1 · Aug 17, 2017 · US
Silicon Based Ion Emitter Assembly
US-2017238404-A1 · Aug 17, 2017 · US
Antistatic device and associated operating method
US-9730305-B2 · Aug 8, 2017 · US
Ion generation apparatus and electric equipment
US-2017221668-A1 · Aug 3, 2017 · US
Device for forming air flow containing charged ions
US-9706628-B2 · Jul 11, 2017 · US
Ion generator
US-9674934-B2 · Jun 6, 2017 · US
Corona ignition device and method for the production thereof
US-2017149216-A1 · May 25, 2017 · US
Insulation machine platform, substrate-contact type apparatus, and static electricity elimination method
US-9661726-B2 · May 23, 2017 · US
Silicon based ion emitter assembly
US-9642232-B2 · May 2, 2017 · US
Moisturizing apparatus and electrical equipment including the same, and moisturizing method
US-9585819-B2 · Mar 7, 2017 · US
Corona ignition device
US-9553427-B2 · Jan 24, 2017 · US
Ionizer and substrate transfer system having the same, and method of manufacturing a semiconductor device using the same
US-9543151-B2 · Jan 10, 2017 · US
Ion generation apparatus and electric equipment using the same
US-9514909-B2 · Dec 6, 2016 · US
Discharge electrode and testing device
US-2016313284-A1 · Oct 27, 2016 · US
Ion generator
US-2016302293-A1 · Oct 13, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01T19/04?
- CPC H01T19/04 is the Cooperative Patent Classification code for “having pointed electrodes.”
- How many patents are filed under CPC H01T19/04 (having pointed electrodes)?
- Our database includes 241 publications tagged with this CPC code.
- Is patent activity under CPC H01T19/04 growing?
- Publication counts under this code: 22 in 2024 vs 11 in 2025 (latest complete years).