Patent US3203936A successfully refreshed from Google Patents.
US3203936A
Expired / Lapsed
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Cross-linking ethylene polymers
Assignee: Hercules Powder Co
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Filing: 1961-03-15
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Granted: 1965-08-31
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Expires: 1981-03-15
Abstract
No abstract record available.
Inventors
- 👤 David S Breslow
- 👤 Harold M Spurlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08F; C08F8/00; C08F8/34; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A PROCESS OF CROSS-LINKING A POLYMER CONTAINING AT LEAST ABOUT 25 MOLE PERCENT OF ETHYLEN WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN ALIPHATIC POLYSULFONAZIDE HAVING THE FORMULA R(--SO2N3)X WHERE X IS AN INTEGER FROM 2 TO 20 AND R IS AN ORGANIC RADICAL CONTAINING FROM ABOUT 5 TO ABOUT 30 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND ARYL ALIPHATIC RADICALS, SAID SULFONAZIDE GROUPS BEING ATTACHED TO ALIPHATIC CARBON ATOMS.
Claim 2
Dependent Claim
75 words
A PROCESS OF CROSS-LINKING A POLYMER CONTAINING AT LEAST ABOUT 25 MOLE PERCENT OF ETHYLEN WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN ALIPHATIC POLYSULFONAZIDE HAVING THE FORMULA R(--SO2N3)X WHERE X IS AN INTEGER FROM 2 TO 20 AND R IS AN ORGANIC RADICAL CONTAINING FROM ABOUT 5 TO ABOUT 30 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND ARYL ALIPHATIC RADICALS, SAID SULFONAZIDE GROUPS BEING ATTACHED TO ALIPHATIC CARBON ATOMS.
Claim 3
Dependent Claim
19 words
A POLYMER CONTAINING AT LEAST ABOUT 25 MOLE PERCENT OF ETHYLENE CROSS-LINKED WITH AN ALIPHATIC POLYSULFONAZIDE HAVING THE FORMULA
Claim 4
Dependent Claim
19 words
A POLYMER CONTAINING AT LEAST ABOUT 25 MOLE PERCENT OF ETHYLENE CROSS-LINKED WITH AN ALIPHATIC POLYSULFONAZIDE 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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |