US2544236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc oxide-magnesium oxide luminous pigments activated by bismuth or bismuth and iron
Assignee: New Jersey Zinc Co
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Filing: 1947-06-13
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Granted: 1951-03-06
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Expires: 1967-06-13
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Reimert
- 👤 Erastus A Fatzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:51
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/7407
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A LUMINESCENT PIGMENT CONSISTING ESSENTIALLY OF A BASE MATERIAL CONSISTING OF A CALCINED MIXTURE OF ZINC OXIDE AND MAGNESIUM OXIDE, THE MAGNESIUM OXIDE COMPRISING FROM ABOUT 3% TO ABOUT 36% BY WEIGHT OF SAID MIXTURE, AND ABOUT 0.01 TO 10.8% BY WEIGHT OF A BISMUTH ACTIVATOR.
Claim 2
Dependent Claim
46 words
A LUMINESCENT PIGMENT CONSISTING ESSENTIALLY OF A BASE MATERIAL CONSISTING OF A CALCINED MIXTURE OF ZINC OXIDE AND MAGNESIUM OXIDE, THE MAGNESIUM OXIDE COMPRISING FROM ABOUT 3% TO ABOUT 36% BY WEIGHT OF SAID MIXTURE, AND ABOUT 0.01 TO 10.8% BY WEIGHT OF A BISMUTH ACTIVATOR.
Claim 3
Dependent Claim
66 words
A LUMINESCENT PIGMENT CONSISTING ESSENTIALLY OF A BASE MATERIAL CONSISTING OF A CALCINED MIXTURE OF ZINC OXIDE AND MAGNESIUM OXIDE, THE MAGNESIUM OXIDE COMPRISING ABOUT 12% BY WEIGHT OF SAID MIXTURE, THE BASE MATERIAL BEING DOUBLY ACTIVATED WITH BISMUTH AND IRON, THE BISMUTH BEING PRESENT IN AMOUNT OF ABOUT 0.01 TO 10.8% BY WEIGHT AND THE IRON PRESENT IN AMOUNT UP TO ABOUT 0.01% BY WEIGHT.
Claim 4
Dependent Claim
66 words
A LUMINESCENT PIGMENT CONSISTING ESSENTIALLY OF A BASE MATERIAL CONSISTING OF A CALCINED MIXTURE OF ZINC OXIDE AND MAGNESIUM OXIDE, THE MAGNESIUM OXIDE COMPRISING ABOUT 12% BY WEIGHT OF SAID MIXTURE, THE BASE MATERIAL BEING DOUBLY ACTIVATED WITH BISMUTH AND IRON, THE BISMUTH BEING PRESENT IN AMOUNT OF ABOUT 0.01 TO 10.8% BY WEIGHT AND THE IRON PRESENT IN AMOUNT UP TO ABOUT 0.01% BY WEIGHT.
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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |