US2857289A
Expired / Lapsed
US
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Method of grinding and aluminum-nickel alloy
Assignee: GTE Sylvania Inc
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Filing: 1955-09-29
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Granted: 1958-10-21
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 Leonard W Kates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; H01J9/042; B; B02; B02C; B02C17/00; B02C17/04; B02C17/08; B02C17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD FOR ADDING AN ALUMINUM NICKEL ALLOY TO AN AQUEOUS SUSEPENSION CONTAINING AT LEAST ONE ALKALINE EARTH METAL CARBONATE, SAID METHOD COMPRISING THE STEP OF CONTACTING SAID SUSPENSION WITH GRINDING MEDIA IN A BALL MILL, THE INNER SURFACE OF SAID MILL BEING LINED WITH NICKEL, SAID GRINDING MEDIA BEING COMPOSED OF SAID ALLOY.
Claim 2
Independent Claim
54 words
A METHOD FOR ADDING AN ALUMINUM NICKEL ALLOY TO AN AQUEOUS SUSEPENSION CONTAINING AT LEAST ONE ALKALINE EARTH METAL CARBONATE, SAID METHOD COMPRISING THE STEP OF CONTACTING SAID SUSPENSION WITH GRINDING MEDIA IN A BALL MILL, THE INNER SURFACE OF SAID MILL BEING LINED WITH NICKEL, SAID GRINDING MEDIA BEING COMPOSED OF SAID ALLOY.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |