US3355281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for modifying the physical properties of aluminum casting alloys
Assignee: Millennium Petrochemicals Inc
•
Filing: 1964-04-22
•
Granted: 1967-11-28
•
Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Virgil L Hansley
- 👤 Fred K Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD FOR MODIFYING THE PHYSICAL PROPERTIES OF ALUMINUM CASTING ALLOYS WHICH COMPRISES ADDING THERETO A PROPERTY-IMPROVING AMOUNT OF AN ALKALINE EARTH METAL AND AN ALKALI METAL IN THE FORM OF A MATER ALLOY CONSISTING ESSENTIALLY OF ABOUT 0.5 TO 20% BY WEIGHT OF AN ALKALINE EARTH METAL, ABOUT 0.01 TO 1% BY WEIGHT OF AN ALKALI METAL, AND ABOUT 79 TO 99% BY WEIGHT OF ALUMINUM.
Claim 2
Independent Claim
67 words
A METHOD FOR MODIFYING THE PHYSICAL PROPERTIES OF ALUMINUM CASTING ALLOYS WHICH COMPRISES ADDING THERETO A PROPERTY-IMPROVING AMOUNT OF AN ALKALINE EARTH METAL AND AN ALKALI METAL IN THE FORM OF A MATER ALLOY CONSISTING ESSENTIALLY OF ABOUT 0.5 TO 20% BY WEIGHT OF AN ALKALINE EARTH METAL, ABOUT 0.01 TO 1% BY WEIGHT OF AN ALKALI METAL, AND ABOUT 79 TO 99% BY WEIGHT OF ALUMINUM.
References Cited (Backward Citations)
US2087269A
Cited
US3265492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |