US3276316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polarizing ultraviolet light utilizing oriented polymer sheet with incorporated dichroic fluorescent dye
Assignee: Polaroid Corp
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Filing: 1961-08-02
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Granted: 1966-10-04
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Albert S Makas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:34
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165974A
Cited
US2255940A
Cited
US2330718A
Cited
GB828831A
Cited
US3043709A
Cited
US2970066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |