Patent US5001571A successfully refreshed from Google Patents.
Patent US3194655A successfully refreshed from Google Patents.
US3194655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a copper-chromiumzirconium alloy
Assignee: Millennium Petrochemicals Inc
•
Filing: 1961-07-28
•
Granted: 1965-07-13
•
Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Alan R Pels
- 👤 Herman F Petsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:29
CPC Classifications
C; C22; C22C; C22C9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR MAKING A COPPER-CHROMIUM-ZIRCONIUM ALLOY, COMPISING FORMING A MELT OF SUBSTANTIALLY PURE OXYGEN FREE COPPER PROTECTED FROM OXYGEN, WHILE MAINTAINING SAID MELT SO PROTECTED AND AT A HIGH TEMPERATURE COMPLETELY DISSOLVING THEREIN FROM .60 TO .60% CHROMIUM, THEREAFTER WHILE SO PROTECTED LOWERING THE TEMPERATURE OF SAID MELT TO A TEMPERATURE CAUSING RAPID SOLUTION OF ZIRCONIUM THEREWITH WITHOUT EXCESSIVE ZIRCONIUM LOSS AND DISSOLVING THEREIN FROM .40% TO .60% ZIRCONIUM AND WITH COMPLETE SOLUTION THEREOF PROMPTLY PROCESSING THE ALLOY METAL TO FORM A CASTING.
Claim 2
Dependent Claim
84 words
A PROCESS FOR MAKING A COPPER-CHROMIUM-ZIRCONIUM ALLOY, COMPISING FORMING A MELT OF SUBSTANTIALLY PURE OXYGEN FREE COPPER PROTECTED FROM OXYGEN, WHILE MAINTAINING SAID MELT SO PROTECTED AND AT A HIGH TEMPERATURE COMPLETELY DISSOLVING THEREIN FROM .60 TO .60% CHROMIUM, THEREAFTER WHILE SO PROTECTED LOWERING THE TEMPERATURE OF SAID MELT TO A TEMPERATURE CAUSING RAPID SOLUTION OF ZIRCONIUM THEREWITH WITHOUT EXCESSIVE ZIRCONIUM LOSS AND DISSOLVING THEREIN FROM .40% TO .60% ZIRCONIUM AND WITH COMPLETE SOLUTION THEREOF PROMPTLY PROCESSING THE ALLOY METAL TO FORM A CASTING.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |