Patent US3330704A successfully refreshed from Google Patents.
US3330704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory coatings for metal surfaces
Assignee: Amicon Corp
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Filing: 1965-10-21
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Granted: 1967-07-11
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Alan S Michaels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:16
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A REFRACTORY METAL PRODUCT HAVING ON ITS SURFACE AN ADHERENT FIRED-IN-SITU REFRACTORY COATING WHICH PRIOR TO FIRING CONSISTS ESSENTIALLY OF A MIXTURE OF (1) SILICONCONTAINING MATERIAL SELECTED FROM THE CLASS CONSISTING OF FINELY DIVIDED SILICATE MINERAL, MIXTURES THEREOF WITH SILICA, MIXTURES THEREOF WITH BORON OXIDE, AND MIXTURES THEREOF WITH LOW-MELTING METAL SILICATE GLASSES, (2) A HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHROMIUM TRIOXIDE, AMMONIUM CHROMATE, AMMONIUM DICHROMATE, AND CHROMATES AND DICHROMATES OF THE METALS LEAD, ZINC, BARIUM, LITHIUM AND MANGANESE, AND MIXTURES THEREOF, (3) AN AMOUNT OF A COMPOUND OF SAID METALS SELECTED FROM THE CLASS CONSISTING OF OXIDES, HYDROXIDES, NITRATES, CARBONATES, AND HALIDES, WHICH AMOUNT IS EQUAL TO 0% TO 35% OF OXIDE-EQUIVALENT OF SAID METALS BY WEIGHT OF THE TOTAL AND IS SUFFICIENT TO PROVIDE A TOTAL QUANTITY OF OXIDE-EQUIVALENT OF SAID METALS IN THE MIXTURE FROM 2% TO 35% BY WEIGHT OF THE TOTAL, THE AMOUNT OF SILICON-CONTAINING MATERIAL BEING FROM 10% TO 70% BY WEIGHT OF THE TOTAL AND THE AMOUNT OF SAID HEXAVALENT CHROMIUM COMPOUND BEING FROM 10% TO 50% OF THE TOTAL.
Claim 2
Dependent Claim
181 words
A REFRACTORY METAL PRODUCT HAVING ON ITS SURFACE AN ADHERENT FIRED-IN-SITU REFRACTORY COATING WHICH PRIOR TO FIRING CONSISTS ESSENTIALLY OF A MIXTURE OF (1) SILICONCONTAINING MATERIAL SELECTED FROM THE CLASS CONSISTING OF FINELY DIVIDED SILICATE MINERAL, MIXTURES THEREOF WITH SILICA, MIXTURES THEREOF WITH BORON OXIDE, AND MIXTURES THEREOF WITH LOW-MELTING METAL SILICATE GLASSES, (2) A HEXAVALENT CHROMIUM COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHROMIUM TRIOXIDE, AMMONIUM CHROMATE, AMMONIUM DICHROMATE, AND CHROMATES AND DICHROMATES OF THE METALS LEAD, ZINC, BARIUM, LITHIUM AND MANGANESE, AND MIXTURES THEREOF, (3) AN AMOUNT OF A COMPOUND OF SAID METALS SELECTED FROM THE CLASS CONSISTING OF OXIDES, HYDROXIDES, NITRATES, CARBONATES, AND HALIDES, WHICH AMOUNT IS EQUAL TO 0% TO 35% OF OXIDE-EQUIVALENT OF SAID METALS BY WEIGHT OF THE TOTAL AND IS SUFFICIENT TO PROVIDE A TOTAL QUANTITY OF OXIDE-EQUIVALENT OF SAID METALS IN THE MIXTURE FROM 2% TO 35% BY WEIGHT OF THE TOTAL, THE AMOUNT OF SILICON-CONTAINING MATERIAL BEING FROM 10% TO 70% BY WEIGHT OF THE TOTAL AND THE AMOUNT OF SAID HEXAVALENT CHROMIUM COMPOUND BEING FROM 10% TO 50% OF THE TOTAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |