US4649364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bifunctional environment sensor
Assignee: Omron Corp
•
Filing: 1984-09-18
•
Granted: 1987-03-10
•
Expires: 2004-09-18
Abstract
Abstract An environment sensor includes an insulating base board, a first electrode made of a material which can provide an electrical indication of the value of a first physical quantity and formed on the insulating base board, a second electrode formed of electrically conducting material and formed on the insulating base board, and a mass of metal oxide semiconductor material which can provide an electrical indication of the value of a second physical quantity, layered on the base board over the first and second electrodes. Thus, the first electrode by itself constitutes a sensor subsystem which can sense the value of the first physical quantity, which may preferably be temperature, while the first and second electrodes together with the mass of metal oxide semiconductor material constitute a sensor subsystem which can sense the value of the second physical quantity, which may preferably be humidity.
Inventors
- 👤 Maki Tanahashi
- 👤 Sumio Horiike
- 👤 Hiroyuki Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:15
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/183; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/121
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
An environment sensor comprising: (a) an insulating base board; (b) a first electrode made of a material which can provide a first electrical indication of the value of a first physical quantity, formed on said insulating base board; (c) a second electrode formed of electrically conducting material and formed on said insulating base board; and (d) a mass of metal oxide semiconductor material which can provide a second electrical indication of the value of a second physical quantity essentially simultaneously with said first electrical indication, layered on said base board over said first and second electrodes.
Claim 2
Dependent Claim
96 words
An environment sensor comprising: (a) an insulating base board; (b) a first electrode made of a material which can provide a first electrical indication of the value of a first physical quantity, formed on said insulating base board; (c) a second electrode formed of electrically conducting material and formed on said insulating base board; and (d) a mass of metal oxide semiconductor material which can provide a second electrical indication of the value of a second physical quantity essentially simultaneously with said first electrical indication, layered on said base board over said first and second electrodes.
Claim 3
Dependent Claim
41 words
An environment sensor according to claim 1, further comprising a first and a second terminal electrically coupled to parts of said first electrode which are remote from one another and a third terminal which is electrically coupled to said second electrode.
Claim 4
Dependent Claim
29 words
An environment sensor according to claim 2, wherein said electrical indication of the value of said first physical quantity is the resistance between said first and said second terminals.
Claim 5
Dependent Claim
29 words
An environment sensor according to claim 2, wherein said electrical indication of the value of said second physical quantity is the resistance between said first and said third terminals.
Claim 6
Dependent Claim
29 words
An environment sensor according to claim 3, wherein said electrical indication of the value of said second physical quantity is the resistance between said first and said third terminals.
Claim 7
Dependent Claim
27 words
An environment sensor according to claim 3, wherein said first electrode and said second electrode are formed as nonintersecting extended shapes whose perimeters closely approach one another.
Claim 8
Dependent Claim
19 words
An environment sensor according to claim 6, wherein said first electrode and said second electrode are of convoluted shapes.
Claim 9
Dependent Claim
24 words
An environment sensor according to claim 1, wherein said first physical quantity is temperature, and said first electrode is made of heat sensitive material.
Claim 10
Dependent Claim
28 words
An environment sensor according to claim 1, wherein said second physical quantity is humidity, and said mass of metal oxide semiconductor material is made of humidity sensitive material.
Claim 11
Dependent Claim
28 words
An environment sensor according to claim 3, wherein said first physical quantity is temperature, and said first electrode is made of a material whose resistance changes with temperature.
Claim 12
Dependent Claim
32 words
An environment sensor according to claim 3, wherein said second physical quantity is humidity, and said mass of metal oxide semiconductor material is made of a material whose resistance changes with humidity.
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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |