Spark plug
US-2018366917-A1 · Dec 20, 2018 · US
Transient voltage protection device
US12374867B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12374867-B2 |
| Application number | US-202418437653-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 9, 2024 |
| Priority date | Feb 10, 2023 |
| Publication date | Jul 29, 2025 |
| Grant date | Jul 29, 2025 |
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Abstract
Official abstract text for this publication.
A transient voltage protection device comprises a pair of discharge electrodes opposing each other with a gap therebetween and a discharge inducing portion in contact with the pair of discharge electrodes. The discharge inducing portion comprises a ceramic component, metal particles, and pores discontinuously scattered. The pores have an average size of 0.05 μm or more and 1.04 μm or less.
First claim
Opening claim text (preview).
What is claimed is: 1. A transient voltage protection device comprising: a pair of discharge electrodes opposing each other with a gap therebetween; and a discharge inducing portion in contact with the pair of discharge electrodes, wherein the discharge inducing portion comprises a ceramic component, metal particles, and pores discontinuously scattered; and the pores have an average size of 0.10 μm or more and less than 1.00 μm. 2. The transient voltage protection device according to claim 1 , wherein a ratio of a total area of the pores to a total area of the metal particles in a section of the discharge inducing portion is 0.45 or more and 1.24 or less. 3. The transient voltage protection device according to claim 1 , wherein nearest inter-particle distances between the metal particles average 0.25 μm or more and 0.81 μm or less. 4. The transient voltage protection device according to claim 1 , wherein the metal particles comprise at least one selected from the group consisting of Pd, Ag, and Pt as a main component. 5. The transient voltage protection device according to claim 1 , wherein the discharge inducing portion further comprises a zirconia particle. 6. The transient voltage protection device according to claim 1 , wherein the pores have an average size of 0.15 μm or more and 0.74 μm or less.
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Frequently asked questions
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- What does patent US12374867B2 cover?
- A transient voltage protection device comprises a pair of discharge electrodes opposing each other with a gap therebetween and a discharge inducing portion in contact with the pair of discharge electrodes. The discharge inducing portion comprises a ceramic component, metal particles, and pores discontinuously scattered. The pores have an average size of 0.05 μm or more and 1.04 μm or less.
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01T1/22. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 29 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).