US3409429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparency and method of making and using a thin transparent radiation sensitive film consisting essentially of titanium dioxide
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1964-04-15
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Granted: 1968-11-05
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Carl F W Ekman
- 👤 Janet M Norbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705; C; C08; C08G; C08G79/00; Y; Y10; Y10S; Y10S430/00; Y10S430/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2908593A
Cited
US3152903A
Cited
US3112222A
Cited
US3254253A
Cited
US3148057A
Cited
US3142814A
Cited
US3314795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |