Patent US3039870A successfully refreshed from Google Patents.
US3039870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic copolymers comprising salts of n-sulfoalkyl-alpha, beta-unsaturated dicarboxylic imides
Assignee: Eastman Kodak Co
•
Filing: 1960-01-29
•
Granted: 1962-06-19
•
Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Laakso
- 👤 Fleisher Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:05
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; C; C08; C08F; C08F28/00; C08F8/00; C08F8/34; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ANTISTATIC PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT MATERIAL SELECTED FROM THE GROUP CONSISTING OF A CELLULOSE DERIVATIVE, A POLYAMIDE, A POLYESTER, A POLYSTYRENE AND PAPER HAVING THEREON AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER AND CONTAINING IN AT LEAST ONE LAYER ON SAID SUPPORT MATERIAL A RESINOUS LINEAR COPOLYMER CONSISTING ESSENTIALLY OF (1) APPROXIMATELY 50 MOLE PERCENT OF A VINYL COMPOUND OF THE GENERAL STRUCTURE:
Claim 2
Dependent Claim
66 words
AN ANTISTATIC PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT MATERIAL SELECTED FROM THE GROUP CONSISTING OF A CELLULOSE DERIVATIVE, A POLYAMIDE, A POLYESTER, A POLYSTYRENE AND PAPER HAVING THEREON AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER AND CONTAINING IN AT LEAST ONE LAYER ON SAID SUPPORT MATERIAL A RESINOUS LINEAR COPOLYMER CONSISTING ESSENTIALLY OF (1) APPROXIMATELY 50 MOLE PERCENT OF A VINYL COMPOUND OF THE GENERAL STRUCTURE:
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |