US2514855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of color-correcting titania-bearing porcelain enamels
Assignee: Vibrantz Corp
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Filing: 1947-08-15
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Granted: 1950-07-11
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Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
- 👤 Donald R Goetchius
- 👤 Edwin J Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:17
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF RENDERING UNIFORM AS TO COLOR, DIFFERENT BATCHES OF PROCELAIN ENAMEL RESPECTIVELY OPACIFIED BY HAVING SMELTED THEREIN DIFFERENT BATCHES OF COMMERCIALLY PRODUCED TITANIUM DIOXIDE, WHICH COMPRISES FIRST DETERMINING THE TOTAL AMOUNT OF TANTALUM, COLUMBIUM AND TUNGSTEN PRESENT AS IMPURITIES IN SAID TITANIUM DIOXIDE, AND THEN ADDING TO SAID TITANIUM DIOXIDE AT LEAST ONE OF THE ELEMENTS SELECTED FROM THE GROUP CONSISTING OF TANTALUM, COLUMBIUM AND TUNGSTEN SO THAT THE TOTAL PERCENTAGE OF ALL SAID ELEMENTS IN EACH OF THE TITANIUM DIOXIDE BATCHES IS FROM ABOUT 0.1% TO ABOUT 0.2%, SAID TOTAL PERCENTAGE OF ALL SAID ELEMENTS IN EACH OF THE TITANIUM DIOXIDE BATCHES HAVING SUBSTANTIALLY THE
Claim 2
Independent Claim
108 words
THE METHOD OF RENDERING UNIFORM AS TO COLOR, DIFFERENT BATCHES OF PROCELAIN ENAMEL RESPECTIVELY OPACIFIED BY HAVING SMELTED THEREIN DIFFERENT BATCHES OF COMMERCIALLY PRODUCED TITANIUM DIOXIDE, WHICH COMPRISES FIRST DETERMINING THE TOTAL AMOUNT OF TANTALUM, COLUMBIUM AND TUNGSTEN PRESENT AS IMPURITIES IN SAID TITANIUM DIOXIDE, AND THEN ADDING TO SAID TITANIUM DIOXIDE AT LEAST ONE OF THE ELEMENTS SELECTED FROM THE GROUP CONSISTING OF TANTALUM, COLUMBIUM AND TUNGSTEN SO THAT THE TOTAL PERCENTAGE OF ALL SAID ELEMENTS IN EACH OF THE TITANIUM DIOXIDE BATCHES IS FROM ABOUT 0.1% TO ABOUT 0.2%, SAID TOTAL PERCENTAGE OF ALL SAID ELEMENTS IN EACH OF THE TITANIUM DIOXIDE BATCHES HAVING SUBSTANTIALLY THE
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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |