US2861057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-and 4-(alpha-cyanocinnamido) phthalates of hydroxyl-containing polymers
Assignee: Eastman Kodak Co
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Filing: 1956-12-17
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Granted: 1958-11-18
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Stewart H Merrill
- 👤 Donald A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:36
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A RESINUOUS POLYMER SELECTED FROM THE GROUP CONSISTING OF (1) A VINYL POLYMER CONSISTING OF AT LEAST 30% BY WEIGHT OF THE RECURRING GENERAL STRUCTURAL UNIT:
Claim 2
Dependent Claim
26 words
A RESINUOUS POLYMER SELECTED FROM THE GROUP CONSISTING OF (1) A VINYL POLYMER CONSISTING OF AT LEAST 30% BY WEIGHT OF THE RECURRING GENERAL STRUCTURAL UNIT:
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |