US3357481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting erosion on mold surfaces
Assignee: ChampionX LLC
•
Filing: 1965-08-27
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Granted: 1967-12-12
•
Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 William T Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
B; B22; B22C; B22C3/00; B22C23/00; B22C23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A METHOD OF INHIBITING EROSION OF THE SURFACE OF THE BASE MEMBER OF A METAL MOLD USED TO CAST INGOTS, WHICH EROSION NORMALLY OCCURS DURING CONTACT OF SAID SURFACE WITH FLOWING MOLTEN METAL, WHILE SUBSEQUENTLY PREVENTING ADHERENCE OF SAID INGOTS TO SAID BASE MEMBER UPON INGOT FORMATION; WHICH COMPRISES THE STEPS OF APPLYING TO SAID SURFACE A SLURRY COMPRISING A REFRACTORY SUSPENDED IN A BINDER, SAID SLURRY BEING APPLIED IN AN AMOUNT SUFFICIENT TO FORM A COATING OF SUFFICIENT THICKNESS TO INHIBIT SAID EROSION AND PREVENT SAID ADHERENCE AND ALLOWING SAID SLURRY TO DRY WHERBY A PROTECTIVE SOLID COATING IS FORMED UPON SAID BASE MEMBER, SAID SLURRY COMPRISING AT LEAST ONE REFRACTORY SELECTED FROM THE GROUP CONSISTING OF VITREOUS SILICA, CRYSTALLINE SILICA, ALUMINUM SILICATE, ALUMINA, GRAPHITE, ZIRCONIUM SILICATRE, MAGNESIUM SILICATTE AND CLAY SUSPENDED IN A BINDER COMPRISING A COLLOIDAL SILICA SOL AND A SILICIC ACID SOL, WITH SAID BINDER BEING PRESENT IN AN AMOUNT SUFFICIENT TO BIND THE REFRACTORY PARTICLES TOGETHER TO THEREBY FORM A TIGHTLY ADHERENT COATING WHICH IS BONDED TO SAID SURFACE.
Claim 2
Independent Claim
174 words
A METHOD OF INHIBITING EROSION OF THE SURFACE OF THE BASE MEMBER OF A METAL MOLD USED TO CAST INGOTS, WHICH EROSION NORMALLY OCCURS DURING CONTACT OF SAID SURFACE WITH FLOWING MOLTEN METAL, WHILE SUBSEQUENTLY PREVENTING ADHERENCE OF SAID INGOTS TO SAID BASE MEMBER UPON INGOT FORMATION; WHICH COMPRISES THE STEPS OF APPLYING TO SAID SURFACE A SLURRY COMPRISING A REFRACTORY SUSPENDED IN A BINDER, SAID SLURRY BEING APPLIED IN AN AMOUNT SUFFICIENT TO FORM A COATING OF SUFFICIENT THICKNESS TO INHIBIT SAID EROSION AND PREVENT SAID ADHERENCE AND ALLOWING SAID SLURRY TO DRY WHERBY A PROTECTIVE SOLID COATING IS FORMED UPON SAID BASE MEMBER, SAID SLURRY COMPRISING AT LEAST ONE REFRACTORY SELECTED FROM THE GROUP CONSISTING OF VITREOUS SILICA, CRYSTALLINE SILICA, ALUMINUM SILICATE, ALUMINA, GRAPHITE, ZIRCONIUM SILICATRE, MAGNESIUM SILICATTE AND CLAY SUSPENDED IN A BINDER COMPRISING A COLLOIDAL SILICA SOL AND A SILICIC ACID SOL, WITH SAID BINDER BEING PRESENT IN AN AMOUNT SUFFICIENT TO BIND THE REFRACTORY PARTICLES TOGETHER TO THEREBY FORM A TIGHTLY ADHERENT COATING WHICH IS BONDED TO SAID SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |