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US4636767A
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US
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Mixed semiconductor film device for monitoring gases
Assignee: United States Department of the Navy
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Filing: 1985-08-21
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Granted: 1987-01-13
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Expires: 2005-08-21
Abstract
Abstract A method of monitoring gases using electronic conductivity changes in ordd organic semiconductor films comprising an insulated substrate fabricated to an interdigital microelectrode and coated with a vapor sensitive semiconductor film. Variations in current flow caused by vapors interacting with the film are indicative of the vapor type.
Inventors
- 👤 William R. Barger
- 👤 Neldon L. Jarvis
- 👤 Arthur W. Snow
- 👤 Henry Wohltjen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/125; G01N27/126
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A device for detecting vapors comprising: a substrate; electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains stearyl alcohol as a first component of substituted phthalocyanine in which the substituents are connected to the phthalocyanine ring with ether linkages; and wherein the film further contains a second component which promotes the formation of Langmuir-Blodgett films.
Claim 2
Independent Claim
74 words
A device for detecting vapors comprising: a substrate; electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains stearyl alcohol as a first component of substituted phthalocyanine in which the substituents are connected to the phthalocyanine ring with ether linkages; and wherein the film further contains a second component which promotes the formation of Langmuir-Blodgett films.
Claim 3
Dependent Claim
37 words
The device of claim 1 wherein the phthalocyanine of the said first component contains a selected central metal atom, which metal atom is selected from the group consisting of Ni, Co, Pb, Fe, Pd, Pt, and Zn.
Claim 4
Dependent Claim
33 words
The device of claim 2 wherein the said first component of the film is tetracymylphenoxy phthalocyanine with the said selected metal atom, and the said second component of the film is stearyl alcohol.
Claim 5
Dependent Claim
19 words
The device of claim 3 wherein said first component and said second component are present in substantially equimolar amounts.
Claim 6
Independent Claim
79 words
A device for detecting vapors comprising: a substrate composed of quartz; interdigital electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains a first component of metal-containing tetracymylphenoxy phthalocyanine in which the metal is selected from the group consisting of Ni, Co, Pb, Fe, Pd, Pt, and Zn; and wherein the film further contains a second component consisting of stearyl alcohol.
Claim 7
Independent Claim
79 words
A device for detecting vapors comprising: a substrate composed of quartz; interdigital electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains a first component of metal-containing tetracymylphenoxy phthalocyanine in which the metal is selected from the group consisting of Ni, Co, Pb, Fe, Pd, Pt, and Zn; and wherein the film further contains a second component consisting of stearyl alcohol.
Claim 8
Independent Claim
77 words
A device for detecting vapors comprising: a substrate composed of quartz; interdigital electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains a first component of tetracymylphenoxy phthalocyanine which contains two hydrogen atoms in place of a metal atom at the center of the phthalocyanine ring; and wherein the film further contains a second component consisting of stearyl alcohol.
Claim 9
Independent Claim
77 words
A device for detecting vapors comprising: a substrate composed of quartz; interdigital electrodes placed upon the substrate; and an ordered, semiconductive film, placed such that electricity may flow from one electrode to another through the film; wherein the film contains a first component of tetracymylphenoxy phthalocyanine which contains two hydrogen atoms in place of a metal atom at the center of the phthalocyanine ring; and wherein the film further contains a second component consisting of stearyl alcohol.
Claim 10
Dependent Claim
38 words
The device of claim 1 wherein the phthalocyanine of the said first component contains two hydrogen atoms at the center of phthalocyanine ring, which hydrogen atoms occupy the site which could otherwise be occupied by a metal atom.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |