US2976269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene-sulfur dioxide polymerization and product thus obtained
Assignee: EIDP Inc
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Filing: 1955-09-08
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Granted: 1961-03-21
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Expires: 1975-09-08
Abstract
No abstract record available.
Inventors
- 👤 Jong Jan Ide De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:14
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/205; C08G75/22; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L81/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AN ETHYLENE-SULFUR DIOXIDE INTERPOLYMER HAVING ADJACENT ETHYLENE UNITS IN THE INTERPOLYMER CHAIN, AND MORE THAN 50 MOL PERCENT OF THE -CH2CH2-COMPONENT, SAID INTERPOLYMER HAVING NO COMPONENTS OTHER THAN ETHYLENE AND SULFUR DIOXIDE.
Claim 2
Dependent Claim
32 words
AN ETHYLENE-SULFUR DIOXIDE INTERPOLYMER HAVING ADJACENT ETHYLENE UNITS IN THE INTERPOLYMER CHAIN, AND MORE THAN 50 MOL PERCENT OF THE -CH2CH2-COMPONENT, SAID INTERPOLYMER HAVING NO COMPONENTS OTHER THAN ETHYLENE AND SULFUR DIOXIDE.
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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |