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US2583370A
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Method of stabilizing diolefine polymer-sulfur dioxide reaction products
Assignee: Shell Development Co
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Filing: 1948-07-03
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Granted: 1952-01-22
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Goppel Johan Michael
- 👤 Rumscheidt Gottfried Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:21
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D01; D01F; D01F6/00; D01F6/02; D01F6/24; D06M13/322; D06M13/35; D06M13/355; D06M13/358; D06M13/402; D06M13/432; D06M15/00; D06M15/693
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF INCREASING THE RESISTANCE TO DETERIORATION WITH AGE OF A PRODUCT FORMED ON THE REACTION OF ONLY SULFUR DIOXIDE WITH A RUBBERY POLYMER OF AT LEAST ONE CONJUGATED DIOLEFIN COMPOUND, SAID METHOD COMPRISING IMMERSING SAID PRODUCT IN A SOLUTION CONTAINING FROM 0.25 TO 20% OF A THIOUREA COMPOUND.
Claim 2
Independent Claim
50 words
THE METHOD OF INCREASING THE RESISTANCE TO DETERIORATION WITH AGE OF A PRODUCT FORMED ON THE REACTION OF ONLY SULFUR DIOXIDE WITH A RUBBERY POLYMER OF AT LEAST ONE CONJUGATED DIOLEFIN COMPOUND, SAID METHOD COMPRISING IMMERSING SAID PRODUCT IN A SOLUTION CONTAINING FROM 0.25 TO 20% OF A THIOUREA COMPOUND.
References Cited (Backward Citations)
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Cited
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US2379354A
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US2373049A
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US2416061A
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GB593036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |