US2739073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicate pigments
Assignee: JM Huber Corp
•
Filing: 1950-09-06
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Granted: 1956-03-20
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Expires: 1970-09-06
Abstract
No abstract record available.
Inventors
- 👤 Bertorelli Orlando Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:04
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/42; C01B33/26; C01B33/40; C01B33/46; C09; C09C; C09C1/00; C09C1/40; C09C1/405; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/80; C01P2004/82; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AS A NEW PIGMENT, PRECIPITATED WHITE POWDERY COMPOSITION CONSISTING ESSENTIALLY OF OXIDES OF SODIUM, ALUMINUM AND SILICON SUBSTANTIALLY ALL THE PARTICLES OF WHICH ARE LESS THAN 0.5 MICRON IN DIAMETER, WHEREIN THE MOLAR RATIO OF SIO2 TO NA2O IS AT LEAST ABOUT 4 TO 1 AND THE MOLAR RATIO OF NA2O TO AL2O3 IS FROM .8 TO 1.2 TO 1, SAID COMPOSITION HAVING A SPECIFIC GRAVITY OF FROM 2.10 TO 2.26.
Claim 2
Dependent Claim
71 words
AS A NEW PIGMENT, PRECIPITATED WHITE POWDERY COMPOSITION CONSISTING ESSENTIALLY OF OXIDES OF SODIUM, ALUMINUM AND SILICON SUBSTANTIALLY ALL THE PARTICLES OF WHICH ARE LESS THAN 0.5 MICRON IN DIAMETER, WHEREIN THE MOLAR RATIO OF SIO2 TO NA2O IS AT LEAST ABOUT 4 TO 1 AND THE MOLAR RATIO OF NA2O TO AL2O3 IS FROM .8 TO 1.2 TO 1, SAID COMPOSITION HAVING A SPECIFIC GRAVITY OF FROM 2.10 TO 2.26.
References Cited (Backward Citations)
US1343927A
Cited
US1842394A
Cited
US1990751A
Cited
US2237374A
Cited
US2204113A
Cited
US2287700A
Cited
US2271319A
Cited
US2512053A
Cited
US2785396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |