US3392021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic anti-halation layers
Assignee: Eastman Kodak Co
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Filing: 1965-05-25
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Granted: 1968-07-09
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Hugh G Mcguckin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:22
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/12; D06Q1/14; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/8255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE LIGHT SENSITIVE COATING AND HAVING ON THE SAME SUPPORT AT LEAST ONE LAYER COMPRISING CAREY LEA SILVER TONED NEUTRAL WITH IONIC COMPOUND COMPRISING A NOBLE METAL SELECTED FROM THE CLASS CONSISTING OF PALLADIUM, PLATINUM AND GOLD.
Claim 2
Dependent Claim
47 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE LIGHT SENSITIVE COATING AND HAVING ON THE SAME SUPPORT AT LEAST ONE LAYER COMPRISING CAREY LEA SILVER TONED NEUTRAL WITH IONIC COMPOUND COMPRISING A NOBLE METAL SELECTED FROM THE CLASS CONSISTING OF PALLADIUM, PLATINUM AND GOLD.
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |