Gas detector
US-2021164929-A1 · Jun 3, 2021 · US
Gas detector
US11940432B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11940432-B2 |
| Application number | US-201917267059-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 25, 2019 |
| Priority date | Aug 10, 2018 |
| Publication date | Mar 26, 2024 |
| Grant date | Mar 26, 2024 |
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- Title
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- Abstract
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Abstract
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A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.
First claim
Opening claim text (preview).
The invention claimed is: 1. A gas detector comprising: a gas detection unit; and a filter introducing surrounding atmosphere to the gas detection unit, wherein the filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group and wherein said gas-permeable organic polymer membrane is configured to make gases to be detected permeate said gas-permeable organic polymer membrane and to fix siloxane molecules in said gas-permeable organic polymer membrane. 2. The gas detector according to claim 1 , wherein the gas detector is a gas sensor, and wherein the gas sensor further comprises a housing accommodating the gas detection unit and wherein the filter is attached on the housing. 3. The gas detector according to claim 2 , wherein said gas-permeable organic polymer membrane has carboxyl group as the acidic group or amino group as the basic group. 4. The gas detector according to claim 2 , wherein said gas-permeable organic polymer membrane is a membrane of polysaccharide. 5. The gas detector according to claim 2 , wherein said gas-permeable organic polymer membrane is a carboxy-methyl-cellulose membrane having carboxyl group or a chitosan membrane having amino group. 6. The gas detector according to claim 1 , wherein said gas-permeable organic polymer membrane has carboxyl group as the acidic group or amino group as the basic group. 7. The gas detector according to claim 1 , wherein said gas-permeable organic polymer membrane is a membrane of polysaccharide. 8. The gas detector according to claim 1 , wherein said gas-permeable organic polymer membrane is a carboxy-methyl-cellulose membrane having carboxyl group or a chitosan membrane having amino group.
Assignees
Inventors
Classifications
- G01N33/0014Primary
by eliminating a gas (by a chemical reaction G01N33/0013; a chemical reaction taking place or a gas being eliminated in one or more analysing channels G01N33/0024) · CPC title
Polysaccharides · CPC title
Cellulose ethers · CPC title
- B01D71/10Primary
Cellulose; Modified cellulose · CPC title
- G01N27/407Primary
for investigating or analysing gases {(G01N27/411 takes precedence)} · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11940432B2 cover?
- A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.
- Who is the assignee on this patent?
- Figaro Eng, New Cosmos Electric Co, Univ Osaka Public Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N33/0014. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 26 2024 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).