US3028288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film coating for electron device envelopes
Assignee: GTE Sylvania Inc
•
Filing: 1959-09-30
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Granted: 1962-04-03
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Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 William R Mckeirnan
- 👤 Leonard D Schwender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:56
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF LAMINATING A PHOTO TUBE HAVING A GLASS ENVELOPE WITH AN OPAQUE COATING HAVING A WINDOW THEREIN, SAID METHOD COMPRISING MANUFACTURING A SELF SUPPORTING THIN OPAQUE FILM WITH A WINDOW CUT THEREIN AND COMPRISED OF AN OPAQUE PIGMENTATION SELECTED FROM THE CLASS OF MATERIALS INCLUDING GRAPHITE AND FERRIC OXIDE BLACK, SAID PIGMENTATION BEING HELD IN A SOLUBLE ETHYL CELLULOSE BINDER, WETTING THE EXTERIOR OF THE GLASS ENVELOPE WITH A SOLVENT FOR THE BINDER AND BRINGING THE ENVELOPE AND SELF SUPPORTING FILM INTO CONTACT WHEREBY THE FILM WILL WRAP ITSELF AROUND THE PHOTO TUBE.
Claim 2
Independent Claim
95 words
THE METHOD OF LAMINATING A PHOTO TUBE HAVING A GLASS ENVELOPE WITH AN OPAQUE COATING HAVING A WINDOW THEREIN, SAID METHOD COMPRISING MANUFACTURING A SELF SUPPORTING THIN OPAQUE FILM WITH A WINDOW CUT THEREIN AND COMPRISED OF AN OPAQUE PIGMENTATION SELECTED FROM THE CLASS OF MATERIALS INCLUDING GRAPHITE AND FERRIC OXIDE BLACK, SAID PIGMENTATION BEING HELD IN A SOLUBLE ETHYL CELLULOSE BINDER, WETTING THE EXTERIOR OF THE GLASS ENVELOPE WITH A SOLVENT FOR THE BINDER AND BRINGING THE ENVELOPE AND SELF SUPPORTING FILM INTO CONTACT WHEREBY THE FILM WILL WRAP ITSELF AROUND THE PHOTO TUBE.
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |