US2785992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying bulb walls for aluminized cathode ray tubes
Assignee: Thomas Electronics Inc
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Filing: 1955-08-31
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Granted: 1957-03-19
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Expires: 1975-08-31
Abstract
No abstract record available.
Inventors
- 👤 Dabravalski Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS OF PROVIDING AN EVEN LACQUER FILM OVER A LUMINESCENT COATING IN A BULB COMPRISING THE STEPS OF TREATING AT LEAST A PROTION OF THE SIDE WALLS OF SAID BULB WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACETATE, METHYL ETHYL KETONE, METHYL ACETATE AND ETHYL ACETATE, CASTING A LACQUER FILM UPON A LIQUID IN SAID BULB, AND POURING SAID LIQUID OUT OF SAID BULB ACROSS THE TREATED PORTION OF SAID SIDE WALL.
Claim 2
Dependent Claim
75 words
A PROCESS OF PROVIDING AN EVEN LACQUER FILM OVER A LUMINESCENT COATING IN A BULB COMPRISING THE STEPS OF TREATING AT LEAST A PROTION OF THE SIDE WALLS OF SAID BULB WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACETATE, METHYL ETHYL KETONE, METHYL ACETATE AND ETHYL ACETATE, CASTING A LACQUER FILM UPON A LIQUID IN SAID BULB, AND POURING SAID LIQUID OUT OF SAID BULB ACROSS THE TREATED PORTION OF SAID SIDE WALL.
References Cited (Backward Citations)
US2644770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |