Mems flow control chip for gas chromatography
US-2015369781-A1 · Dec 24, 2015 · US
Thermal-based flow sensing apparatuses and methods for high-performance liquid chromatography
US8943887B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8943887-B2 |
| Application number | US-201013512762-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 16, 2010 |
| Priority date | Dec 18, 2009 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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One aspect of the invention provides a flow sensing apparatus including: a fluid channel that allows a fluid to flow in a first direction; a first thermoelectric sensing element arranged at a first position along the fluid channel such that it senses a temperature of the fluid; a second thermoelectric sensing element arranged at a second position along the fluid channel and separated from the first sensing element by a predetermined distance along the fluid channel; and a heating element arranged between the first and second thermoelectric sensing elements, the heating element being equally spaced from the first and second thermoelectric sensing elements.
First claim
Opening claim text (preview).
What is claimed is: 1. A flow sensing apparatus comprising: a fluid channel that allows a fluid to flow in a first direction; a first thermoelectric sensing element arranged at a first position along the fluid channel such that the first thermoelectric sensing element senses a temperature of the fluid, wherein the first thermoelectric sensing element is doped with a N-type charge carrier; a second thermoelectric sensing element arranged at a second position along the fluid cha…
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- G01N30/32Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8943887B2 cover?
- One aspect of the invention provides a flow sensing apparatus including: a fluid channel that allows a fluid to flow in a first direction; a first thermoelectric sensing element arranged at a first position along the fluid channel such that it senses a temperature of the fluid; a second thermoelectric sensing element arranged at a second position along the fluid channel and separated from the f…
- Who is the assignee on this patent?
- Gerhardt Geoff C, Waters Technologies Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N30/32. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 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).