US3099763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube with silica coated phosphor screen
Assignee: US Philips Corp
•
Filing: 1956-01-30
•
Granted: 1963-07-30
•
Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Gentry Charles Harold Raymond
- 👤 Oldfield Reginald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:30
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A CHATHODE-RAY TUBE COMPRISING ELECTRON-RECEIVING PHOSPHOR SCREEN, MEANS FOR PRODUCING AND DIRECTING AN ELECTRON BEAM AT SAID PHOSPHOR SCREEN TO IMPINGE ON A SURFACE THEREOF, AND A LAYER OF EXPOSED SILICA ON SAID SURFACE OF THE SCREEN AND DIRECTLY IMPACTED BY THE BEAM
Claim 2
Dependent Claim
43 words
A CHATHODE-RAY TUBE COMPRISING ELECTRON-RECEIVING PHOSPHOR SCREEN, MEANS FOR PRODUCING AND DIRECTING AN ELECTRON BEAM AT SAID PHOSPHOR SCREEN TO IMPINGE ON A SURFACE THEREOF, AND A LAYER OF EXPOSED SILICA ON SAID SURFACE OF THE SCREEN AND DIRECTLY IMPACTED BY THE BEAM
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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |