US3887785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature controlled hybrid oven
Assignee: United States Department of the Air Force
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Filing: 1974-08-29
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Granted: 1975-06-03
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Expires: 1994-08-29
Abstract
Abstract A temperature controlled microcircuit is located on a beryllia substrate supported symmetrically on thermally insulating glass piers. Thin gold strips located on opposite sides of the microcircuit serve as temperature sensors and are connected to temperature control circuits which regulate the flow of current to microresistive heaters. A second non-temperature controlled substrate may be mounted adjacent first substrate.
Inventors
- 👤 Boyce T Ahlport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:47
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0014; H05K; H05K3/00; H05K3/10; H05K3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A temperature controlled hybrid oven for microcircuits comprising: a base; a plurality of thermally insulating glass piers positioned symmetrically on said base; a beryllia substrate mounted on said piers; a microcircuit mounted on the substrate; a pair of thin gold films deposited on said substrate adjacent to and opposite sides of said microcircuit for sensing substrate temperature, and means for heating the microcircuit mounted on the substrate, connected to the said films whereby temperature changes in said substrate and microcircuit will be sensed and acted upon by the heating means.
Claim 2
Dependent Claim
90 words
A temperature controlled hybrid oven for microcircuits comprising: a base; a plurality of thermally insulating glass piers positioned symmetrically on said base; a beryllia substrate mounted on said piers; a microcircuit mounted on the substrate; a pair of thin gold films deposited on said substrate adjacent to and opposite sides of said microcircuit for sensing substrate temperature, and means for heating the microcircuit mounted on the substrate, connected to the said films whereby temperature changes in said substrate and microcircuit will be sensed and acted upon by the heating means.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |