US3200271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bolometer
Assignee: Pure Oil Co
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Filing: 1962-07-23
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Granted: 1965-08-10
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Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Robert M Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:45
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/38; G01J5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A BOLOMETER COMPRISING A WAFER-LIKE PIEXOLELECTRIC CRYSTAL HAVING TWO PARALLEL FACES, SAID CRYSTAL FACES HAVING DIFFERENT COEFFICIENTS OF LINEAR THERMAL EXPANSION IN DIFFERENT DIRECTIONS AT LEAST A MAJOR PORTION OF ONE OF SAID FACES BEING COVERED WITH AN ADHERENT COATING OF A METAL HAVING A COEFFICIENT OF LINEAR THERMAL EXPANSION AT LEAST TWICE THE MINIMUM LINEAR COEFFICIENT OF THERMAL EXPANSION OF SAID CRYSTAL FACE, SAID COATING BEING FURTHER CHARACTERIZED BY A SPECIFIC HEAT OF LESS THAN ABOUT 0.1, AND A COEFFICIENT OF ABSORPTION OF LIGHT OF NOT LESS THAN ABOUT 0.5, AND ELECTRODE MEANS OPERATIVELY CONNECTED TO EACH OF SAID PARALLEL FACES OF THE CRYSTAL.
Claim 2
Dependent Claim
105 words
A BOLOMETER COMPRISING A WAFER-LIKE PIEXOLELECTRIC CRYSTAL HAVING TWO PARALLEL FACES, SAID CRYSTAL FACES HAVING DIFFERENT COEFFICIENTS OF LINEAR THERMAL EXPANSION IN DIFFERENT DIRECTIONS AT LEAST A MAJOR PORTION OF ONE OF SAID FACES BEING COVERED WITH AN ADHERENT COATING OF A METAL HAVING A COEFFICIENT OF LINEAR THERMAL EXPANSION AT LEAST TWICE THE MINIMUM LINEAR COEFFICIENT OF THERMAL EXPANSION OF SAID CRYSTAL FACE, SAID COATING BEING FURTHER CHARACTERIZED BY A SPECIFIC HEAT OF LESS THAN ABOUT 0.1, AND A COEFFICIENT OF ABSORPTION OF LIGHT OF NOT LESS THAN ABOUT 0.5, AND ELECTRODE MEANS OPERATIVELY CONNECTED TO EACH OF SAID PARALLEL FACES OF THE CRYSTAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |