US2592337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chill casting brass and other copper alloys containing zinc
Assignee: Non-Ferrous Die Casting Co Ltd
•
Filing: 1949-07-23
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Granted: 1952-04-08
•
Expires: 1969-07-23
Abstract
No abstract record available.
Inventors
- 👤 Robertson Neil Douglas Gordon
- 👤 Browse George William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
B; B22; B22D; B22D21/00; B22D21/02; B22D21/027; B22C; B22C23/00; B22C23/02; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE METHOD OF CHILL CASTING BRASS AND OTHER COPPER ALLOYS CONTAINING ZINC IN METAL MOLDS OR DIES, WHICH INCLUDES THE STEP OF APPLYING TO THE DIE FACES A DRESSING OF A METAL OXIDE CAPABLE OF BEING REDUCED TO A LOWER OXIDE BY METALLIC ZINC AT POURING TEMPERATURES.
Claim 2
Independent Claim
47 words
THE METHOD OF CHILL CASTING BRASS AND OTHER COPPER ALLOYS CONTAINING ZINC IN METAL MOLDS OR DIES, WHICH INCLUDES THE STEP OF APPLYING TO THE DIE FACES A DRESSING OF A METAL OXIDE CAPABLE OF BEING REDUCED TO A LOWER OXIDE BY METALLIC ZINC AT POURING TEMPERATURES.
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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) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |