Patent US2803541A successfully refreshed from Google Patents.
US2803541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic plate
Assignee: Xerox Corp
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Filing: 1953-05-29
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Granted: 1957-08-20
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Paris Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AN IMPROVED PHOTOELECTRICALLY SENSITIVE MEMBER COMPRISING A CONDUCTIVE BACKING MEMBER HAVING THEREON A CARRIER LAYER CONSISTING OF VITREOUS SELENIUM AND A THIN LAYER THEREOVER CONSISTING OF A MIXTURE OF SELENIUM AND TELLURIUM IN THEIR VITREOUS FORM.
Claim 2
Dependent Claim
36 words
AN IMPROVED PHOTOELECTRICALLY SENSITIVE MEMBER COMPRISING A CONDUCTIVE BACKING MEMBER HAVING THEREON A CARRIER LAYER CONSISTING OF VITREOUS SELENIUM AND A THIN LAYER THEREOVER CONSISTING OF A MIXTURE OF SELENIUM AND TELLURIUM IN THEIR VITREOUS FORM.
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GB358672A
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US2189576A
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US2575392A
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US2619418A
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |