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US2995463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope coating method and apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1957-10-28
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Granted: 1961-08-08
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Meister George
- 👤 Stanley A Lopenski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:19
CPC Classifications
H; H01; H01K; H01K3/00; H01K3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF INCREASING THE ADHERENCE OF ELECTROSTATICALLY-DEPOSITED FINELY-DIVIDED MATERIAL TO THE INTERIOR SURFACE OF A LIGHT-TRANSMITTING GLASS ENVELOPE HAVING A NECK PORTION, COMPRISING HEATING THE MATERIAL-COATED ENVELOPE TO RENDER IT SUBSTANTIALLY UNIFORMLY ELECTRICALLY CONDICTIVE, AND APPLYING FOR A PERIOD OF AT LEAST 0.5 SECOND A TRAVELLING HIGH INTENSITY ELECTROSTATIC FIELD BETWEEN
Claim 2
Independent Claim
52 words
THE METHOD OF INCREASING THE ADHERENCE OF ELECTROSTATICALLY-DEPOSITED FINELY-DIVIDED MATERIAL TO THE INTERIOR SURFACE OF A LIGHT-TRANSMITTING GLASS ENVELOPE HAVING A NECK PORTION, COMPRISING HEATING THE MATERIAL-COATED ENVELOPE TO RENDER IT SUBSTANTIALLY UNIFORMLY ELECTRICALLY CONDICTIVE, AND APPLYING FOR A PERIOD OF AT LEAST 0.5 SECOND A TRAVELLING HIGH INTENSITY ELECTROSTATIC FIELD BETWEEN
References Cited (Backward Citations)
US2806444A
Cited
US2811131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |