US3340076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fused refractory castings
Assignee: Corning Glass Works
•
Filing: 1966-05-03
•
Granted: 1967-09-05
•
Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 Allen M Alper
- 👤 Robert C Doman
- 👤 Robert N Mcnally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:21
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/5607; C04B35/5611; C04B35/5622; C04B35/5626; C04B35/58; C04B35/58007; C04B35/58014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
AS AN ARTICLE OF MANUFACTURE, A FUSED CAST REFRACTORY CASTING CONSISTING ESSENTIALLY OF AT LEAST 5% BY WEIGHT FREE CARBON IN THE FORM OF A RANDOM INTERWOVEN PATTERN HOMOGENEOUSLY INTERMINGLING AND INTERLOCKING WITH SUBSTANTIALLY RANDOMLY ORIENTED METALLIC CARBODE CRYSTALS, SAID CASTING ANALYTICALLY CONSISTING ESSENTIALLY OF: (1) CARBON; (2) AT LEAST 20% BY WEIGHT OF METALLIC CARBIDE-FORMING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, TUNGSTEN, MIXTURES OF THE AFORESAID FIRST GROUP OF METALS ALONE, AND MIXTURES OF THE AFORESAID FIRST GROUP OF METALS AND AT LEAST ONE SECOND GROUP METALLIC ELEMENTS FROM THE GROUP CONSISTING OF SILICON, MANGANESE, IRON, COBALT AND NICKEL, PROVIDED THE CONTENT OF THE AFORESAID FIRST GROUP METALS IS NOT LESS THAN 10% BY WEIGHT NOR LESS THAN THE CONTENT BY WEIGHT OF THE AFORESAID SECOND GROUP OF METALLIC ELEMENTS; (3) 0 TO 15% BY WEIGHT OF AT LEAST ONE DILUENT SELECTED FROM THE GROUP CONSISTING OF NOT MORE THAN 10% BY WEIGHT OF OXYGEN AND NOT MORE THAN 10% BY WEIGHT OF NITROGEN; AND (4) A REMAINDER, IF ANY, OF 0 TO 5% BY WEIGHT OF OTHER ELEMENTS.
Claim 2
Dependent Claim
189 words
AS AN ARTICLE OF MANUFACTURE, A FUSED CAST REFRACTORY CASTING CONSISTING ESSENTIALLY OF AT LEAST 5% BY WEIGHT FREE CARBON IN THE FORM OF A RANDOM INTERWOVEN PATTERN HOMOGENEOUSLY INTERMINGLING AND INTERLOCKING WITH SUBSTANTIALLY RANDOMLY ORIENTED METALLIC CARBODE CRYSTALS, SAID CASTING ANALYTICALLY CONSISTING ESSENTIALLY OF: (1) CARBON; (2) AT LEAST 20% BY WEIGHT OF METALLIC CARBIDE-FORMING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, TUNGSTEN, MIXTURES OF THE AFORESAID FIRST GROUP OF METALS ALONE, AND MIXTURES OF THE AFORESAID FIRST GROUP OF METALS AND AT LEAST ONE SECOND GROUP METALLIC ELEMENTS FROM THE GROUP CONSISTING OF SILICON, MANGANESE, IRON, COBALT AND NICKEL, PROVIDED THE CONTENT OF THE AFORESAID FIRST GROUP METALS IS NOT LESS THAN 10% BY WEIGHT NOR LESS THAN THE CONTENT BY WEIGHT OF THE AFORESAID SECOND GROUP OF METALLIC ELEMENTS; (3) 0 TO 15% BY WEIGHT OF AT LEAST ONE DILUENT SELECTED FROM THE GROUP CONSISTING OF NOT MORE THAN 10% BY WEIGHT OF OXYGEN AND NOT MORE THAN 10% BY WEIGHT OF NITROGEN; AND (4) A REMAINDER, IF ANY, OF 0 TO 5% BY WEIGHT OF OTHER ELEMENTS.
References Cited (Backward Citations)
GB504543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |