Soil Analyis Compositions and Methods
US-2024337636-A1 · Oct 10, 2024 · US
Dehydration sensors having buffered inks
US8933291B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933291-B2 |
| Application number | US-85823410-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 17, 2010 |
| Priority date | Aug 17, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A dehydration sensor having a stable, printable, buffered-ink composition that enables one to miniaturize the detection zone and permits both buffer and indicator dye to be applied in the same area of a detection zone, without need for a conventional, large buffer pad region.
First claim
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We claim: 1. A dehydration sensor that comprises: a porous substrate, with a buffered ink system that is directly deposited on a portion of said substrate; the buffered ink system is composed of 0.5-30 wt. % of a weak polymeric acid, 0.5 -3 wt. % of a polymeric stabilizer which functions as a proton-exchange hydrogen-bonding neutral buffer bridge, and a cationic surfactant; and a pH-sensitive dye; wherein said surfactant serves as an immobilization agent of the pH-sensitive…
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Human Necessities · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01N21/80Primary
Physics · mapped topic
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- What does patent US8933291B2 cover?
- A dehydration sensor having a stable, printable, buffered-ink composition that enables one to miniaturize the detection zone and permits both buffer and indicator dye to be applied in the same area of a detection zone, without need for a conventional, large buffer pad region.
- Who is the assignee on this patent?
- Wei Ning, Song Xuedong, Phillips Ronnie L, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G01N21/80. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 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).