US2854348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing tri-color fluorescent screens
Assignee: GTE Sylvania Inc
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Filing: 1954-08-16
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Granted: 1958-09-30
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Bowerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:57
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
THE METHOD OF PREPARING A TRI-COLOR FLUORSCENT SCREEN SUITABLE FOR USE IN A CATHODE RAY TUBE INCLUDING THE STEPS OF PRINTING A FIRST TACKY PATTERN ON FIRST DESIGNATED AREAS OF A SURFACE WITH A FIRST PHOSPHOR POWDER, PILED, DUSTING SAID SURFACE WITH A FIRST PHOSPHOR POWDER, REMOVING RESIDUAL QUANTITIES OF SAID FIRST PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID FIRST TACKY PATTERN, PRINTING A SECOND TACKY PATTERN BEFORE THE FIRST TACKY PATTERN HAS BECOME DRY, ON SECOND DESIGNATED ARE AS OF SAID SURFACE, DUSTING SAID SURFACE WITH A SECOND PHOSPHOR POWDER BEFORE THE SECOND TACKY PATTERN DISTRIBUTES ITSELF OVER THE PHOSPHOR POWDER ADHERING TO THE FIRST TACKY PATTERN, REMOVING RESIDUAL QUANTITIES OF SAID SECOND PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID SECOND TACKY PATTERN, PRINGING A THIRD TACKY PATTERN BEFORE THE SECOND TACKY PATTERN HAS BECOME DRY, ON THIRD DESIGNATED AREAS OF SAID SURFACE, DUSTING SAID SURFACE WITH A THIRD PHOSPHOR POWDER BEFORE THE THIRD TACKY PATTERN DISTRUBUTES ITSELF OVER THE PHOSPHOR POWDERS ADHERING TO THE FIRST AND SECOND TACKY PATTERNS, REMOVING RESIDUAL QUANTITIES OF SAID THIRD PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID THIRD TACKY PATTERN, AND BAKING SAID SURFACE TO GASIFY THE TACKY SUBSTANCE OF SAID PATTERNS AND TO LEAVE ONLY THE REPECTIVE PHOSPHORS.
Claim 2
Independent Claim
209 words
THE METHOD OF PREPARING A TRI-COLOR FLUORSCENT SCREEN SUITABLE FOR USE IN A CATHODE RAY TUBE INCLUDING THE STEPS OF PRINTING A FIRST TACKY PATTERN ON FIRST DESIGNATED AREAS OF A SURFACE WITH A FIRST PHOSPHOR POWDER, PILED, DUSTING SAID SURFACE WITH A FIRST PHOSPHOR POWDER, REMOVING RESIDUAL QUANTITIES OF SAID FIRST PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID FIRST TACKY PATTERN, PRINTING A SECOND TACKY PATTERN BEFORE THE FIRST TACKY PATTERN HAS BECOME DRY, ON SECOND DESIGNATED ARE AS OF SAID SURFACE, DUSTING SAID SURFACE WITH A SECOND PHOSPHOR POWDER BEFORE THE SECOND TACKY PATTERN DISTRIBUTES ITSELF OVER THE PHOSPHOR POWDER ADHERING TO THE FIRST TACKY PATTERN, REMOVING RESIDUAL QUANTITIES OF SAID SECOND PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID SECOND TACKY PATTERN, PRINGING A THIRD TACKY PATTERN BEFORE THE SECOND TACKY PATTERN HAS BECOME DRY, ON THIRD DESIGNATED AREAS OF SAID SURFACE, DUSTING SAID SURFACE WITH A THIRD PHOSPHOR POWDER BEFORE THE THIRD TACKY PATTERN DISTRUBUTES ITSELF OVER THE PHOSPHOR POWDERS ADHERING TO THE FIRST AND SECOND TACKY PATTERNS, REMOVING RESIDUAL QUANTITIES OF SAID THIRD PHOSPHOR POWDER WHICH DOES NOT ADHERE TO SAID THIRD TACKY PATTERN, AND BAKING SAID SURFACE TO GASIFY THE TACKY SUBSTANCE OF SAID PATTERNS AND TO LEAVE ONLY THE REPECTIVE PHOSPHORS.
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |