Patent US3194797A successfully refreshed from Google Patents.
US3194797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrazo group containing polymers
Assignee: Eastman Kodak Co
•
Filing: 1959-11-02
•
Granted: 1965-07-13
•
Expires: 1979-11-02
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Edward H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A POLYMER OF IMPROVED DYEABILITY COMPRISING THE REACTION PRODUCT OF (1) A COPOLYMER OF FROM 3-35% BY WEIGHT OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
25 words
A POLYMER OF IMPROVED DYEABILITY COMPRISING THE REACTION PRODUCT OF (1) A COPOLYMER OF FROM 3-35% BY WEIGHT OF A COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |