Patent US2851353A successfully refreshed from Google Patents.
US2851353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-base alloys
Assignee: International Business Machines Corp
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Filing: 1953-07-15
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Granted: 1958-09-09
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Expires: 1973-07-15
Abstract
No abstract record available.
Inventors
- 👤 Donald B Roach
- 👤 Roland B Fischer
- 👤 Jackson John Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:39
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A COPPER-BASE ALLOY CONSISTING ESSENTIALLY OF FROM ABOUT 5% TO ABOUT 15% NICKEL, FROM ABOUT 0.1% TO ABOUT 2.0% SILICON, FROM ABOUT 0.1% TO ABOUT 6.0% ALUMINUM, AND THE BALANCE ESSENTIALLY ALL COPPER.
Claim 2
Dependent Claim
33 words
A COPPER-BASE ALLOY CONSISTING ESSENTIALLY OF FROM ABOUT 5% TO ABOUT 15% NICKEL, FROM ABOUT 0.1% TO ABOUT 2.0% SILICON, FROM ABOUT 0.1% TO ABOUT 6.0% ALUMINUM, AND THE BALANCE ESSENTIALLY ALL COPPER.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |