US2862841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pretreatment of iron or steel base for single coat vitreous enameling
Assignee: Inland Steel Co
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Filing: 1957-09-26
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Granted: 1958-12-02
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Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Bernick
- 👤 Henry M Roelofs
- 👤 James E Mcfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
C; C23; C23D; C23D3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/1266; Y10T428/12667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PREPARING AN IRON OR STEEL BASE FOR VITREOUS ENAMELING SO AS TO OBTAIN SATISFACTORY ENAMEL ADHERENCE WITH A SINGLE COVER COAT OF A LIGHT COLORED VITREOUS ENAMEL APPLIED DIRECTLY TO THE BASE, SAID PROCESS COMPRISING THE STEPS OF PROVIDING ON THE SURFACE OF THE METAL BASE A COATING COMPRISING AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ANTIMONY, AND TUNGSTEN OXIDES, AND HEATING THE OXIDE COATED BASE IN A SUBSTANTIALLY NON-OXIDIZING ATMOSPHERE TO A TEMPERATURE AT WHICH REDUCTION OF THE OXIDE BY REACTION WITH THE IRON IN SAID BASE OCCURS.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PREPARING AN IRON OR STEEL BASE FOR VITREOUS ENAMELING SO AS TO OBTAIN SATISFACTORY ENAMEL ADHERENCE WITH A SINGLE COVER COAT OF A LIGHT COLORED VITREOUS ENAMEL APPLIED DIRECTLY TO THE BASE, SAID PROCESS COMPRISING THE STEPS OF PROVIDING ON THE SURFACE OF THE METAL BASE A COATING COMPRISING AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ANTIMONY, AND TUNGSTEN OXIDES, AND HEATING THE OXIDE COATED BASE IN A SUBSTANTIALLY NON-OXIDIZING ATMOSPHERE TO A TEMPERATURE AT WHICH REDUCTION OF THE OXIDE BY REACTION WITH THE IRON IN SAID BASE OCCURS.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |