US3500099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead oxide photoconductive members and method of producing such members
Assignee: EMI Ltd
•
Filing: 1968-03-20
•
Granted: 1970-03-10
•
Expires: 1988-03-20
Abstract
No abstract record available.
Inventors
- 👤 Stanley Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:08
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/233; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3003075A
Cited
US2890359A
Cited
US2888370A
Cited
US2886726A
Cited
US3289024A
Cited
US3372056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |