US3555666A
Expired / Lapsed
US
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Method of diffusion bonding of metals
Assignee: Bendix Corp
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Filing: 1968-01-25
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Granted: 1971-01-19
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Expires: 1988-01-25
Abstract
Abstract A METHOD FOR SOLID STATE DIFFUSION BONDING OF TWO BODIES OF METAL SUCH AS THE LAMINAS OF A FLUIDIC DEVICE WHEREIN THE SURFACES ARE PREPARED BY REMOVING THE SURFACE OXIDES AND THEN COVERED WITH A SELF-REMOVABLE SUBSTANCE HAVING A LOW SOLUBILTIY OF OXYGEN AND A LOW DIFFUSION RATE OF OXYGEN SUCH AS ALCOHOLS, GLYCERINE, GLYCOLS, POLYBUTENES, ACRYLIC RESINS, LACQUERS AND POLYSTYRENES TO PREVENT OXIDATION OF THE SURFACES. WHILE THE SURFACES ARE STILL COVERED BY THIS OXIDATION-PREVENTING SUBSTANCE, THE BODIES OF METAL ARE ASSEMBLED AND PLACED IN A VACUUM FURNACE FOR BONDING.
Inventors
- 👤 Seong Kwan Rhee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/104; C07D295/108; B; B23; B23K; B23K20/00; B23K20/16; B23K20/24; B23K35/00; B23K35/22; B23K35/226; F; F15; F15C; F15C5/00
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |