US3140779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working method and lubricant
Assignee: Corning Glass Works
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Filing: 1962-08-06
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Granted: 1964-07-14
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Dalton
- 👤 William H Kroeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:08
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN THE ART OF SHAPING A BODY OF METAL BY SUBJECTING IT TO PRESSURE WHILE THE BODY IS MAINTAINED WITHIN A RANGE OF ELEVATED TEMPERATURES AND IS DISPOSED IN WORKING RELATIONSHIP TO A DIE MEMBER PROVIDED WITH A VITREOUS LUBRICANT, THE METHOD OF BROADENING THE RANGE OT METAL WORKING TEMPERATURES WHICH COMPRISES PROVIDING AS THE LUBRICANT A GLASS CONSISTING OF 50-100% B2O3 AND 3-50% SIO2, AND CHARACTERIZED BY A VISCOSITY GRADIENT OF ABOUT 1.8 IN THE METAL WORKING TEMPERATURE RANGE.
Claim 2
Dependent Claim
80 words
IN THE ART OF SHAPING A BODY OF METAL BY SUBJECTING IT TO PRESSURE WHILE THE BODY IS MAINTAINED WITHIN A RANGE OF ELEVATED TEMPERATURES AND IS DISPOSED IN WORKING RELATIONSHIP TO A DIE MEMBER PROVIDED WITH A VITREOUS LUBRICANT, THE METHOD OF BROADENING THE RANGE OT METAL WORKING TEMPERATURES WHICH COMPRISES PROVIDING AS THE LUBRICANT A GLASS CONSISTING OF 50-100% B2O3 AND 3-50% SIO2, AND CHARACTERIZED BY A VISCOSITY GRADIENT OF ABOUT 1.8 IN THE METAL WORKING TEMPERATURE RANGE.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |