Patent US3449257A successfully refreshed from Google Patents.
US3449257A
Expired / Lapsed
US
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Brightener compositions
Assignee: Eastman Kodak Co
•
Filing: 1966-11-03
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Granted: 1969-06-10
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Tuite
- 👤 Donald N Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; D; D06; D06L; D06L4/00; D06L4/60; D06L4/664; Y; Y10; Y10S; Y10S430/00; Y10S430/134; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A COMPOSITION COMPRISING A HYDROPHOBIC POLYMER AND A NONMIGRATING OPTICAL BRIGHTENER HAVING THE FORMULA:
Claim 2
Dependent Claim
14 words
A COMPOSITION COMPRISING A HYDROPHOBIC POLYMER AND A NONMIGRATING OPTICAL BRIGHTENER HAVING THE FORMULA:
References Cited (Backward Citations)
US3135762A
Cited
US3178445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |