US3497382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing pure,red lead monoxide
Assignee: US Philips Corp
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Filing: 1966-03-08
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Granted: 1970-02-24
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Expires: 1986-03-08
Abstract
No abstract record available.
Inventors
- 👤 Wim Kwestroo
- 👤 Petrus Helena Gerardus Vromans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:00
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/233; C; C01; C01G; C01G21/00; C01G21/02; C01G21/06; H10; H10P; H10P95/00; C01P; C01P2002/00; C01P2002/70; C01P2002/76; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PHOTOCONDUCTIVE DEVICE COMPRISING A TRANSPARENT CONDUCTIVE LAYER AND AN ADHERING COATING CONSISTING OF TETRAGONAL PBO CONTAINING LESS THAN 20 P.P.M. OF SILICON OXIDE.
Claim 2
Dependent Claim
24 words
A PHOTOCONDUCTIVE DEVICE COMPRISING A TRANSPARENT CONDUCTIVE LAYER AND AN ADHERING COATING CONSISTING OF TETRAGONAL PBO CONTAINING LESS THAN 20 P.P.M. OF SILICON OXIDE.
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |