US2811463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic black pigment
Assignee: Vibrantz Corp
•
Filing: 1955-12-23
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Granted: 1957-10-29
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Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Burgyan Aladar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:47
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/22; C09C1/24; C01; C01P; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AS A NEW INORGANIC BLACK PIGMENT CONSISTING ESSENTIALLY OF SUBSTANTIALLY BLACK OXIDES OF MN, CU AND FE THE CALCINATION PRODUCT OF AN ADMIXTURE OF FROM ABOUT 20 TO 80 PARTS BY WEIGHT OF THOSE COMPOUNDS OF MN WHICH YIELD THEIR OXIDES ON CALCINATION, FROM ABOUT 20 TO 80 PARTS BY WEIGHT OF THOSE COMPOUNDS OF CU WHICH YIELD THEIR OXIDES ON CALCINATION AND FROM ABOUT 5 TO 50 PARTS BY WEIGHT OF THOSE COMPOUNDS OF FE WHICH YIELD THEIR OXIDES ON CALCINATION, SAID ADMIXTURE CALCINED AT A TEMPERATURE OF FROM ABOUT 800*F. TO 1400*F.
Claim 2
Dependent Claim
94 words
AS A NEW INORGANIC BLACK PIGMENT CONSISTING ESSENTIALLY OF SUBSTANTIALLY BLACK OXIDES OF MN, CU AND FE THE CALCINATION PRODUCT OF AN ADMIXTURE OF FROM ABOUT 20 TO 80 PARTS BY WEIGHT OF THOSE COMPOUNDS OF MN WHICH YIELD THEIR OXIDES ON CALCINATION, FROM ABOUT 20 TO 80 PARTS BY WEIGHT OF THOSE COMPOUNDS OF CU WHICH YIELD THEIR OXIDES ON CALCINATION AND FROM ABOUT 5 TO 50 PARTS BY WEIGHT OF THOSE COMPOUNDS OF FE WHICH YIELD THEIR OXIDES ON CALCINATION, SAID ADMIXTURE CALCINED AT A TEMPERATURE OF FROM ABOUT 800*F. TO 1400*F.
References Cited (Backward Citations)
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Cited
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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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |