US3247473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold diffusion bond between acoustic delay line and back electrode or acoustic absorber
Assignee: Corning Glass Works
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Filing: 1963-09-19
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Granted: 1966-04-19
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Expires: 1983-09-19
Abstract
No abstract record available.
Inventors
- 👤 Richard E Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:44
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; B; B23; B23K; B23K20/00; B23K20/22; B23K20/233; H01; H01B; H01B1/00; H10; H10N; H10N30/00; H10N30/01; H10N30/07; H10N30/072; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/941; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49005; Y10T29/49016; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12681; Y10T428/12736; Y10T428/12764; Y10T428/12771; Y10T428/12778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A DELAY LINE ASSEMBLY COMPRISING A DEALY MEDIUM, A CRYSTAL TRANSDUCER BONDED TO SAID DELAY MEDIUM, SAID TRANSDUCER HAVING A PLURALITY OF METALLIC LAYERS SELECTED FROM THE GROUP CONSISTING OF: (1) ALUMINUM, NICKEL, AND GOLD, (2) NICKEL-CHROMIUM AND GOLD, AND (3) GOLD APPLIED TO THE OUTER SURFACE THEREOF, A BACK ELECTRODE CONSISTING ESSENTIALLY OF INDIUM, AND A COLD DIFFUSION BOND BETWEEN SAID BACK ELECTRODE AND SAID TRANSDUCER FORMED AT A TEMPERATURE OF ABOUT 150*C. AND UNDER A PRESSURE OF APPROXIMATELY 180 POUNDS PER SQUARE INCH, THE METALLIC LAYER ADJACENT SAID BACK ELECTRODE BEING GOLD.
Claim 2
Dependent Claim
94 words
A DELAY LINE ASSEMBLY COMPRISING A DEALY MEDIUM, A CRYSTAL TRANSDUCER BONDED TO SAID DELAY MEDIUM, SAID TRANSDUCER HAVING A PLURALITY OF METALLIC LAYERS SELECTED FROM THE GROUP CONSISTING OF: (1) ALUMINUM, NICKEL, AND GOLD, (2) NICKEL-CHROMIUM AND GOLD, AND (3) GOLD APPLIED TO THE OUTER SURFACE THEREOF, A BACK ELECTRODE CONSISTING ESSENTIALLY OF INDIUM, AND A COLD DIFFUSION BOND BETWEEN SAID BACK ELECTRODE AND SAID TRANSDUCER FORMED AT A TEMPERATURE OF ABOUT 150*C. AND UNDER A PRESSURE OF APPROXIMATELY 180 POUNDS PER SQUARE INCH, THE METALLIC LAYER ADJACENT SAID BACK ELECTRODE BEING GOLD.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |