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US-2016377502-A1 · Dec 29, 2016 · US
Filter inspection method and filter inspection apparatus
US8966959B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8966959-B2 |
| Application number | US-201213431096-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2012 |
| Priority date | Mar 30, 2011 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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There is disclosed a filter inspection method which is excellent in sensitivity to detect defects of a filter and in operation efficiency. The filter inspection method includes a humidifying step of exposing a porous filter to moisture-containing air; and a detecting step of introducing water particles into the filter in a wet state through the humidifying step, to detect the water particles which pass through and flow out of the filter, thereby detecting defects of the filter.
First claim
Opening claim text (preview).
What is claimed is: 1. A filter inspection method comprising: a humidifying step of exposing a porous filter to moisture-containing air on one side of the filter and sucking the moisture-containing air from the other ide of the filter to place the porous filter in a wet state; and after the humidifying step is completed, performing a subsequent and separate detecting step of introducing water particles into the filter in the wet state through the humidifying step to detect the w…
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- G01M3/20Primary
Physics · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8966959B2 cover?
- There is disclosed a filter inspection method which is excellent in sensitivity to detect defects of a filter and in operation efficiency. The filter inspection method includes a humidifying step of exposing a porous filter to moisture-containing air; and a detecting step of introducing water particles into the filter in a wet state through the humidifying step, to detect the water particles wh…
- Who is the assignee on this patent?
- Miyashita Kouichi, Okuma Yusuke, Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01M3/20. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 2015 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).