US2744072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphor coating composition
Assignee: Westinghouse Electric Corp
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Filing: 1953-06-24
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Granted: 1956-05-01
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Expires: 1973-06-24
Abstract
No abstract record available.
Inventors
- 👤 Meister George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A COATING COMPOSITION FOR APPLYING LUMINESCENT MATERIALS TO VITREOUS SURFACES COMPRISING A PHOSPHOR SUSPENDED IN A LIQUID VEHICLE, SAID LIQUID VEHICLE COMPRISING METHYL CELLULOSE, WATER, A COMPLETELY WATER SOLUBLE MONO-HYDROXY ALCOHOL HAVING A BOILING POINT BELOW THAT OF WATER AND AN ALKALIZING-DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM HYDROXIDE AND A WATER SOLUBLE AMINE WHOSE BOILING POINT IS BELOW THAT OF WATER, THE PH OF SAID COMPOSITION NOT EXCEEDING 12, THE PERCENTAGE BY WEIGHT OF SAID METHYL CELLULOSE TO SAID PHOSPHOR BEING FROM 1 TO 3, SAID PHOSPHOR BEING SUSPENDED IN SAID LIQUID VEHICLE IN THE PROPORTIONS OF FROM 0.25 TO 0.5 GRAM PER CUBIC CENTIMETER, THE PERCENTAGE BY VOLUME OF SAID ALKALIZING-DISPERSING AGENT TO SAID VEHICLE BEING FROM 3 TO 10, THE PERCENTAGE BY VOLUME OF SAID FLOW AGENT TO SAID VEHICLE BEING NOT LESS THAN 30, AND THE PROPORTIONS OF SAID FLOW AGENT AND WATER IN SAID COMPOSITION BEING SUCH THAT THE VISCOSITY OF SAID COMPOSITION AT 20* C. FALLS WITHIN THE RANGE OF 100 TO 200 CPS.
Claim 2
Dependent Claim
172 words
A COATING COMPOSITION FOR APPLYING LUMINESCENT MATERIALS TO VITREOUS SURFACES COMPRISING A PHOSPHOR SUSPENDED IN A LIQUID VEHICLE, SAID LIQUID VEHICLE COMPRISING METHYL CELLULOSE, WATER, A COMPLETELY WATER SOLUBLE MONO-HYDROXY ALCOHOL HAVING A BOILING POINT BELOW THAT OF WATER AND AN ALKALIZING-DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM HYDROXIDE AND A WATER SOLUBLE AMINE WHOSE BOILING POINT IS BELOW THAT OF WATER, THE PH OF SAID COMPOSITION NOT EXCEEDING 12, THE PERCENTAGE BY WEIGHT OF SAID METHYL CELLULOSE TO SAID PHOSPHOR BEING FROM 1 TO 3, SAID PHOSPHOR BEING SUSPENDED IN SAID LIQUID VEHICLE IN THE PROPORTIONS OF FROM 0.25 TO 0.5 GRAM PER CUBIC CENTIMETER, THE PERCENTAGE BY VOLUME OF SAID ALKALIZING-DISPERSING AGENT TO SAID VEHICLE BEING FROM 3 TO 10, THE PERCENTAGE BY VOLUME OF SAID FLOW AGENT TO SAID VEHICLE BEING NOT LESS THAN 30, AND THE PROPORTIONS OF SAID FLOW AGENT AND WATER IN SAID COMPOSITION BEING SUCH THAT THE VISCOSITY OF SAID COMPOSITION AT 20* C. FALLS WITHIN THE RANGE OF 100 TO 200 CPS.
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |