Patent US3489759A successfully refreshed from Google Patents.
US3489759A
Expired / Lapsed
US
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Certain salts of (1-azonia-2-(1,3-dioxolan-2 - yl)benzyl)diesters and derivatives thereof
Assignee: Eastman Kodak Co
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Filing: 1967-08-22
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Granted: 1970-01-13
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Expires: 1987-08-22
Abstract
No abstract record available.
Inventors
- 👤 Donald L Fields
- 👤 Jerry B Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:44
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/40; G03C5/44; G03C5/29; G03C5/30; G03C5/3021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF CATIONS OF THE FORMULA:
Claim 2
Dependent Claim
15 words
A SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF CATIONS OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |