US3352667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of hydrogen-embrittlement in oxygen-bearing copper
Assignee: Raytheon Co
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Filing: 1964-09-29
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Granted: 1967-11-14
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Dilip K Das
- 👤 Freedman George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:46
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C22; C22B; C22B15/00; C22B15/0026; C22B15/006; C22C; C22C32/00; C22C9/00; C22F; C22F1/00; C22F1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
DISPERSION-HARDENED COPPER CONTAINING BORON OXIDE DISPERSED THROUGHOUT THE COPPER MATRIX, SAID BORON OXIDE BEING PRESENT IN AN AMOUNT UP TO ABOUT 0.9%, UP TO ABOUT 0.06% ELEMENTAL BORON IN SOLID SOLUTION IN THE COPPER, AND SUBSTANTIALLY NO OXYGEN IN A FORM AVAILABLE FOR REACTION WITH HYDROGEN.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |