Patent US3419600A successfully refreshed from Google Patents.
US3419600A
Expired / Lapsed
US
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Novel nitro- and amino-arylalkoxy-hydroquinones
Assignee: Polaroid Corp
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Filing: 1964-04-15
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Granted: 1968-12-31
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Warren E Solodar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:28
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A CHEMICAL COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
GB853482A
Cited
US3009958A
Cited
US2955038A
Cited
US3061434A
Cited
US3022354A
Cited
US3019254A
Cited
US3142564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |