US2566302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of cinnamoyl-vinyl aromatic hydrocarbons
Assignee: Eastman Kodak Co
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Filing: 1947-08-28
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Granted: 1951-09-04
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Expires: 1967-08-28
Abstract
No abstract record available.
Inventors
- 👤 Charles F H Allen
- 👤 James A Van Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:37
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A RESINOUS POLYMER OF A COMPOUND (A) REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
13 words
A RESINOUS POLYMER OF A COMPOUND (A) REPRESENTED BY THE FOLLOWING GENERAL 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) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |