US3257664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive polymers
Assignee: Eastman Kodak Co
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Filing: 1961-10-23
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Granted: 1966-06-21
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Gerhard W Leubner
- 👤 Cornelius C Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C08; C08B; C08B13/00; C08B3/00; C08B3/08; C08B3/10; C08B3/16; C08B31/00; C08F; C08F8/00; C08F8/14; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A FILM-FORMING LIGHT-SENSITIVE POLYMER DERIVED FROM THOSE SELECTED FROM THE CLASS CONSISTING OF A HOMOPOLYMER OF VINYL ALCOHOL, A COPOLMER OF VINYL ALCOHOL, AND A CELLULOSE, SAID POLYMER CONTAINING RECURRING ALKAPOLYENOATE GROUPS HAVING THE FORMULA:
Claim 2
Dependent Claim
35 words
A FILM-FORMING LIGHT-SENSITIVE POLYMER DERIVED FROM THOSE SELECTED FROM THE CLASS CONSISTING OF A HOMOPOLYMER OF VINYL ALCOHOL, A COPOLMER OF VINYL ALCOHOL, AND A CELLULOSE, SAID POLYMER CONTAINING RECURRING ALKAPOLYENOATE GROUPS HAVING THE 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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |