Patent US2556921A successfully refreshed from Google Patents.
US2556921A
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Gold beryllium alloy and method of making same
Assignee: Individual
•
Filing: 1947-08-28
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Granted: 1951-06-12
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Expires: 1967-08-28
Abstract
No abstract record available.
Inventors
- 👤 Hirsch Harold
- 👤 Kowalchik Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/16; C; C22; C22C; C22C5/00; C22C5/02; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A PROCESS FOR PREPARING COHERENT METALLIC BODIES OF ABOUT 8 PER CENT BY WEIGHT BERYLLIUM AND ABOUT 92 PER CENT BY WEIGHT GOLD, WHICH COMPRISES INTIMATELY MIXING POWDERS OF SAID ELEMETNS IN THE AFORESAID PROPORTIONS, COMPACTING THE MIXTURES IN A DIE, HEATING THE POWDERS TO A TEMPERATURE OF ABOUT 350* C. FOR ABOUT ONE HOUR AND THEN COMPRISING THE MIXTURE WITH A COMPRESSIVE FORCE OF AT LEAST 50 TONS PER SQUARE INCH FOR FIVE MINUTES.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PREPARING COHERENT METALLIC BODIES OF ABOUT 8 PER CENT BY WEIGHT BERYLLIUM AND ABOUT 92 PER CENT BY WEIGHT GOLD, WHICH COMPRISES INTIMATELY MIXING POWDERS OF SAID ELEMETNS IN THE AFORESAID PROPORTIONS, COMPACTING THE MIXTURES IN A DIE, HEATING THE POWDERS TO A TEMPERATURE OF ABOUT 350* C. FOR ABOUT ONE HOUR AND THEN COMPRISING THE MIXTURE WITH A COMPRESSIVE FORCE OF AT LEAST 50 TONS PER SQUARE INCH FOR FIVE MINUTES.
Claim 3
Dependent Claim
8 words
THE PRODUCT OF THE PROCESS OF CLAIM 1.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |