US3876423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-chromium alloys
Assignee: Individual
•
Filing: 1973-10-29
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Granted: 1975-04-08
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Expires: 1993-10-29
Abstract
Abstract A nickel-chromium alloy composed of the following ingredients in the following ranges of percentage by weight:
Inventors
- 👤 Miles S Firnhaber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:04
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN ALLOY IN WHICH THE INGREDIENTS ARE IN ABOUT THE FOLLOWING PERCENTAGES BY WEIGHT: C .15 MN 1.02 FE 2.40 SI .99 W 8.00 CO 1.80 CR 33.15 NI 48.15 MO 3.71 SAID ALLOY BEING CHARACTERIZED BY RESISTANCE TO CORROSIVE ATTACK BY MOLTEN GLASS, HAVING SUPERIOR CREP RESISTANCE, HAVING STRENGTH AT ELEVATED TEMPERATURES, AND IMPARTING RESULTANCE TO DEFORMATION TO ARTICLES MADE THEREFROM THE RESISTANCE TO CRACKING AFTER PROLONGED EXPOSURE TO ELEVATED TEMPERATURES ABOVE 2000*F.
Claim 2
Dependent Claim
74 words
AN ALLOY IN WHICH THE INGREDIENTS ARE IN ABOUT THE FOLLOWING PERCENTAGES BY WEIGHT: C .15 MN 1.02 FE 2.40 SI .99 W 8.00 CO 1.80 CR 33.15 NI 48.15 MO 3.71 SAID ALLOY BEING CHARACTERIZED BY RESISTANCE TO CORROSIVE ATTACK BY MOLTEN GLASS, HAVING SUPERIOR CREP RESISTANCE, HAVING STRENGTH AT ELEVATED TEMPERATURES, AND IMPARTING RESULTANCE TO DEFORMATION TO ARTICLES MADE THEREFROM THE RESISTANCE TO CRACKING AFTER PROLONGED EXPOSURE TO ELEVATED TEMPERATURES ABOVE 2000*F.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |