Patent US731215A successfully refreshed from Google Patents.
US2769733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing particles on a cathode ray tube screen structure
Assignee: Lanteris Space LLC
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Filing: 1953-01-28
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Granted: 1956-11-06
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Expires: 1973-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles H Pool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:44
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/34; H01J9/00; H01J9/20; H01J9/22; H01J9/227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF FORMING A LAYER OF SECONDARY ELECTRON EMISSIVE MATERIAL IN INTIMATE CONTACT WITH A SUBSTRATE CONSTITUTED BY THE PREVIOUSLY FORMED PORTIONS OF A CATHODE RAY TUBE SCREEN STRUCTURE, SAID METHOD COMPRISING THE STEPS OF DEPOSITING ON THE SURFACE OF SAID SUBSTRATE PARTICLES OF SAID MATERIAL DISPERSED IN A MATERIAL WHICH IS WATER SOLUBLE AT DESPOSITION AND WHICH IS RESPONSIVE TO A STIMULUS TO BECOME INSOLUBLE, WASHING SAID SURFACE WITH WATER TO REMOVE ALL BUT THOSE OF SAID PARTICLES WHICH ARE IN INTIMATE CONTACT WITH SAID SURFACE, DEPOSITING ON SAID SURFACE ADDITIONAL PARTICLES OF THE SAME MATERIAL, ALSO DISPERSED IN A FLUID MATERIAL WHICH IS WATER SOLUBLE TO DEPOSITION AND WHICH IS RESPONSIVE TO A STIMULUS TO BECOME INSOLUBLE, AND SUBJECTING SAID DEPOSITED MATERIAL TO SAID STIMULUS.
Claim 2
Independent Claim
128 words
THE METHOD OF FORMING A LAYER OF SECONDARY ELECTRON EMISSIVE MATERIAL IN INTIMATE CONTACT WITH A SUBSTRATE CONSTITUTED BY THE PREVIOUSLY FORMED PORTIONS OF A CATHODE RAY TUBE SCREEN STRUCTURE, SAID METHOD COMPRISING THE STEPS OF DEPOSITING ON THE SURFACE OF SAID SUBSTRATE PARTICLES OF SAID MATERIAL DISPERSED IN A MATERIAL WHICH IS WATER SOLUBLE AT DESPOSITION AND WHICH IS RESPONSIVE TO A STIMULUS TO BECOME INSOLUBLE, WASHING SAID SURFACE WITH WATER TO REMOVE ALL BUT THOSE OF SAID PARTICLES WHICH ARE IN INTIMATE CONTACT WITH SAID SURFACE, DEPOSITING ON SAID SURFACE ADDITIONAL PARTICLES OF THE SAME MATERIAL, ALSO DISPERSED IN A FLUID MATERIAL WHICH IS WATER SOLUBLE TO DEPOSITION AND WHICH IS RESPONSIVE TO A STIMULUS TO BECOME INSOLUBLE, AND SUBJECTING SAID DEPOSITED MATERIAL TO SAID STIMULUS.
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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |