Patent US3075280A successfully refreshed from Google Patents.
US3075280A
Expired / Lapsed
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Method of making printed wiring assemblies
Assignee: AT&T Inc
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Filing: 1959-10-19
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Granted: 1963-01-29
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Expires: 1979-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert F Jack
- 👤 Robert E Prescott
- 👤 Philip R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:56
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/20; H05K3/207; H05K3/102; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09118; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0113; H05K2203/11; H05K2203/1131; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49158; Y10T29/49163; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/1209; Y10T428/12389; Y10T428/12396
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF PRODUCING A PRINTED WIRING ASSEMBLY COMPRISING THE STEPS OF DISPOSING METAL PARTICLES HAVING AN AVERAGE SIZE OF FROM ABOUT 100-MESH TO ABOUT 325MESH IN A CONFIGURATION CORRESPONDING TO THE CONDUCTING PATHS OF THE PRINTED WIRING BOARD, COMPRESSING THE METAL PARTICLES UNDER A PRESSURE IN THE ORDER OF 5,000 P.S.I. TO 100,000 P.S.I. SINTERING THE COMPRESSED PARTICLES IN A REDUCING ATMOSPHERE AT A TEMPERATURE OF FROM APPROXIMATELY 400*C. TO APPROXIMATELY 800*C., AND MOLDING AN INSULATING BASE IN DIRECT CONTACT WITH THE SINTERED AND COMPRESSED PARTICLES.
Claim 2
Independent Claim
87 words
THE METHOD OF PRODUCING A PRINTED WIRING ASSEMBLY COMPRISING THE STEPS OF DISPOSING METAL PARTICLES HAVING AN AVERAGE SIZE OF FROM ABOUT 100-MESH TO ABOUT 325MESH IN A CONFIGURATION CORRESPONDING TO THE CONDUCTING PATHS OF THE PRINTED WIRING BOARD, COMPRESSING THE METAL PARTICLES UNDER A PRESSURE IN THE ORDER OF 5,000 P.S.I. TO 100,000 P.S.I. SINTERING THE COMPRESSED PARTICLES IN A REDUCING ATMOSPHERE AT A TEMPERATURE OF FROM APPROXIMATELY 400*C. TO APPROXIMATELY 800*C., AND MOLDING AN INSULATING BASE IN DIRECT CONTACT WITH THE SINTERED AND COMPRESSED PARTICLES.
References Cited (Backward Citations)
US1895519A
Cited
US2172243A
Cited
US2447541A
Cited
US2721153A
Cited
US2578209A
Cited
US2700719A
Cited
US2777162A
Cited
US2925645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |