Patent US3033679A successfully refreshed from Google Patents.
US3033679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic photographic element comprising a styrene copolymer layer
Assignee: Eastman Kodak Co
•
Filing: 1958-10-14
•
Granted: 1962-05-08
•
Expires: 1978-10-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Laakso
- 👤 Calvin S Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
AN ANTISTATIC PHOTOGRAPHIC FILM ELEMENT COMPRISING A HYDROPHOBIC FILM SUPPORT HAVING THEREON AT LEAST ONE SENSITIVE SILVER HALIDE EMULSION LAYER AND HAVING IN AT LEAST ONE OUTER STRATUM THEREOF A COPIOLYMERR OF FROM 25-75 MOLE PERCENT OF STYRENE AND 75-25 MLE PERCENT OF A COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
51 words
AN ANTISTATIC PHOTOGRAPHIC FILM ELEMENT COMPRISING A HYDROPHOBIC FILM SUPPORT HAVING THEREON AT LEAST ONE SENSITIVE SILVER HALIDE EMULSION LAYER AND HAVING IN AT LEAST ONE OUTER STRATUM THEREOF A COPIOLYMERR OF FROM 25-75 MOLE PERCENT OF STYRENE AND 75-25 MLE PERCENT OF A COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2074647A
Cited
US2717834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |