US2982759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic elastomers
Assignee: EIDP Inc
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Filing: 1958-10-20
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Granted: 1961-05-02
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Heuse Ralph Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:19
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F8/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A CURABLE HOMOGENEOUSLY CHLOROSULFONATED POLYETHYLENE HAVING A CHLORINE CONTENT OF FROM 38% TO ABOUT 48% BY WEIGHT AND A SULFUR CONTENT OF FROM 0.1% TO 3.0% BY WEIGHT, THE POLYETHYLENE PRIOR TO CHLOROSULFONATION HAVING A DENSITY OF FROM 0.935 TO ABOUT 0.960, A MELT INDEX OF FROM 0.2 TO ABOUT 200, AND A SOLUBILITY IN CARBON TETRACHLORIDE OF AT LEAST 1% BY WEIGHT.
Claim 2
Dependent Claim
63 words
A CURABLE HOMOGENEOUSLY CHLOROSULFONATED POLYETHYLENE HAVING A CHLORINE CONTENT OF FROM 38% TO ABOUT 48% BY WEIGHT AND A SULFUR CONTENT OF FROM 0.1% TO 3.0% BY WEIGHT, THE POLYETHYLENE PRIOR TO CHLOROSULFONATION HAVING A DENSITY OF FROM 0.935 TO ABOUT 0.960, A MELT INDEX OF FROM 0.2 TO ABOUT 200, AND A SOLUBILITY IN CARBON TETRACHLORIDE OF AT LEAST 1% BY WEIGHT.
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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |