US2843570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl and aryl isopropenyl sulfones and polymers thereof
Assignee: Eastman Kodak Co
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Filing: 1953-08-31
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Granted: 1958-07-15
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Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Hubert M Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:38
CPC Classifications
C; C08; C08F; C08F28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A POLYMER OF A COMPOUND HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
9 words
A POLYMER OF A COMPOUND HAVING THE FOLLOWING 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) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |