Patent US2659682A successfully refreshed from Google Patents.
US2659682A
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Apparatus and method for making a photoconductive element
Assignee: Continental Electric Co
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Filing: 1948-08-05
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Granted: 1953-11-17
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Expires: 1968-08-05
Abstract
No abstract record available.
Inventors
- 👤 Norman C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:30
CPC Classifications
H; H10; H10F; H10F30/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A METHOD OF MAKING A PHOTO-CONDUCTIVE TUBE INCLUDED AN ENVELOPE, COMPRISING DEPOSITING A LAYER OF LEAD SULPHIDE ON A SUPPORTING SURFACE, INTRODUCING THE LEAD SULPHIDE ON SAID SURFACE INTO THE ENVELOPE, AND TRANSFERRING THE LEAD SULPHIDE BY EVAPORATION FROM THE SURFACE ONTO THE ENVELOPE WHILE ACTIVATING SAID LEAD SULPHIDE BY
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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) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |