US3296692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocompression wire attachments to quartz crystals
Assignee: AT&T Inc
•
Filing: 1963-09-13
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Granted: 1967-01-10
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Expires: 1983-09-13
Abstract
No abstract record available.
Inventors
- 👤 Jack P Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:11
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0444; C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; H01; H01B; H01B1/00; H03; H03H; H03H3/00; H03H3/007; H03H3/02; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD FOR MAKING A QUARTZ CRYSTAL DEVICE WHICH COMPRISES VAPOR PLATING ON BOTH MAJOR SURFACES OF A QUARTZ CRYSTAL WAFER, A LAYER OF ALUMINUM 100 A. TO 1000 A. THICK, SAID VAPOR PLATING BEING DONE AT A PRESSURE BETWEEN 10-4 TORR AND 10-6 TORR AND AT A TEMPERATURE OF SAID QUARTZ CRYSTAL SURFACE BETWEEN 200*C. AND 400* C., THERMOCOMPRESSING TO EACH OF SAID ALUMINUM LAYERS ON EACH OF SAID MAJOR SURFACES AT LEAST ONE GOLD-PLATED BERYLLIUM COPPER WIRE CONTACT BY HEATING THE WIRE END AND SAID LAYER TO A TEMPERATURE IN THE RANGE FROM 350* C. TO 500*C. AND THEN PRESSING THE WIRE END AGAINST THE ALUMINUM LAYER AT A PRESSURE OF BETWEEN 10,000 P.S.I. AND 25,000 P.S.I. FOR A PERIOD OF APPROXIMATELY ONE TO FIVE SECONDS.
Claim 2
Independent Claim
128 words
A METHOD FOR MAKING A QUARTZ CRYSTAL DEVICE WHICH COMPRISES VAPOR PLATING ON BOTH MAJOR SURFACES OF A QUARTZ CRYSTAL WAFER, A LAYER OF ALUMINUM 100 A. TO 1000 A. THICK, SAID VAPOR PLATING BEING DONE AT A PRESSURE BETWEEN 10-4 TORR AND 10-6 TORR AND AT A TEMPERATURE OF SAID QUARTZ CRYSTAL SURFACE BETWEEN 200*C. AND 400* C., THERMOCOMPRESSING TO EACH OF SAID ALUMINUM LAYERS ON EACH OF SAID MAJOR SURFACES AT LEAST ONE GOLD-PLATED BERYLLIUM COPPER WIRE CONTACT BY HEATING THE WIRE END AND SAID LAYER TO A TEMPERATURE IN THE RANGE FROM 350* C. TO 500*C. AND THEN PRESSING THE WIRE END AGAINST THE ALUMINUM LAYER AT A PRESSURE OF BETWEEN 10,000 P.S.I. AND 25,000 P.S.I. FOR A PERIOD OF APPROXIMATELY ONE TO FIVE SECONDS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |