US3382910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pore-free die casting
Assignee: International Lead Zinc Research Organization Inc
•
Filing: 1966-06-30
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Granted: 1968-05-14
•
Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Schrade F Radtke
- 👤 Samuel E Eck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:11
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/006; B22D17/00; B22D17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A DIE CASTING METHOD COMPRISES PURGING AIR FROM WITHIN THE DIE CAVITY BY FLUSHING SAID CAVITY WITH A REACTIVE GAS, AND SUBSEQUENTLY INJECTING MOLTEN METAL INTO THE REACTIVE GAS-FILLED CAVITY, WHEREBY THE REACTIVE GAS COMBINES WITH THE MOLTEN METAL, THEREBY REDUCING THE TENDENCY FOR VOIDS TO FORM IN SAID CASTING.
Claim 2
Dependent Claim
50 words
A DIE CASTING METHOD COMPRISES PURGING AIR FROM WITHIN THE DIE CAVITY BY FLUSHING SAID CAVITY WITH A REACTIVE GAS, AND SUBSEQUENTLY INJECTING MOLTEN METAL INTO THE REACTIVE GAS-FILLED CAVITY, WHEREBY THE REACTIVE GAS COMBINES WITH THE MOLTEN METAL, THEREBY REDUCING THE TENDENCY FOR VOIDS TO FORM IN SAID CASTING.
References Cited (Backward Citations)
GB190114146A
Cited
GB190500419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |