Patent US6030437A successfully refreshed from Google Patents.
Patent US3165269A successfully refreshed from Google Patents.
US3165269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of phosphor suspensions
Assignee: The General Electric Company PLC
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Filing: 1961-04-21
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Granted: 1965-01-12
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Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Blackburn Alan Percival
- 👤 Miles Edward Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/02; H; H01; H01J; H01J9/00; H01J9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A MILLING APPARATUS FOR FORMING A SUSPENSION OF POWDERED CRYSTALLINE INORGANIC PHOSPHOR IN A LIQUID CARRIED MEDIUM FOR USE IN COATING GLASS TUBES, DESIGNED TO FORM THE ENVELOPES OF FLUORESCENT ELECTRIC DISCHARGE LAMPS, INTERNALLY WITH A LAYER OF PHOSPHOR, SAID APPARATUS INCORPORATING MEANS FOR FEEDING CONTROLLED QUANTITIES OF THE PHOSPHOR AND LIQUID CARRIER MEDIUM INTO A RESERVOIR TO FORM AN INITIAL SUSPENSION, A MILLING VESSEL CONTAINING A MULTIPLICITY OF GENERALLY CYLINDRICAL AND INDEPENDENTLYMOVABLE MILLING ELEMENTS DISPOSED IN A PLURALITY OF HORIZONTAL LAYERS WITH THE AXES OF THE ELEMENTS SUBSTANTALLY VERTICAL, MEANS FOR FEEDING THE INITIAL SUSPENSION UPWARDS THROUGH THE MILLING VESSEL AT A SUBSTANTIALLY CONSTANT RATE AND MEANS FOR VIBRATING THE VESSEL BOTH PARALLEL AND PERPENDICULAR TO THE AXES OF SAID MILLING ELEMENTS TO CAUSE THE PARTICLES TO BE MILLED ON THE PASSAGE OF THE SUSPENSION THROUGH THE VESSEL.
Claim 2
Dependent Claim
139 words
A MILLING APPARATUS FOR FORMING A SUSPENSION OF POWDERED CRYSTALLINE INORGANIC PHOSPHOR IN A LIQUID CARRIED MEDIUM FOR USE IN COATING GLASS TUBES, DESIGNED TO FORM THE ENVELOPES OF FLUORESCENT ELECTRIC DISCHARGE LAMPS, INTERNALLY WITH A LAYER OF PHOSPHOR, SAID APPARATUS INCORPORATING MEANS FOR FEEDING CONTROLLED QUANTITIES OF THE PHOSPHOR AND LIQUID CARRIER MEDIUM INTO A RESERVOIR TO FORM AN INITIAL SUSPENSION, A MILLING VESSEL CONTAINING A MULTIPLICITY OF GENERALLY CYLINDRICAL AND INDEPENDENTLYMOVABLE MILLING ELEMENTS DISPOSED IN A PLURALITY OF HORIZONTAL LAYERS WITH THE AXES OF THE ELEMENTS SUBSTANTALLY VERTICAL, MEANS FOR FEEDING THE INITIAL SUSPENSION UPWARDS THROUGH THE MILLING VESSEL AT A SUBSTANTIALLY CONSTANT RATE AND MEANS FOR VIBRATING THE VESSEL BOTH PARALLEL AND PERPENDICULAR TO THE AXES OF SAID MILLING ELEMENTS TO CAUSE THE PARTICLES TO BE MILLED ON THE PASSAGE OF THE SUSPENSION THROUGH THE VESSEL.
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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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |