US2848442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil resistant conjugated diene-heterocyclic nitrogen base copolymers
Assignee: Phillips Petroleum Co
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Filing: 1955-04-11
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Granted: 1958-08-19
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Expires: 1975-04-11
Abstract
No abstract record available.
Inventors
- 👤 Sr Joseph F Svetlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF PREPARING AN OIL RESISTANT RUBBER COMPRISING MIXING A RUBBERY CONJUGATED DIENE/HETEROCYCLIC NITROGEN BASE POLYMER WITH COMPOUNDING INGREDIENTS INCLUDING A VULCANIZING AGENT AND CHLORANIL WHILE MAINTAINING THE TEMPERATURE BELOW 230*F., THE AMOUNT OF SAID CHLORANIL BEING IN THE RANGE OF 3 TO 20 PARTS BY WEIGHT PER 100 PARTS OF SAID RUBBERY POLYMER, AND THEREAFTER HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF 250 TO 350*F. FOR 5 TO 90 MINUTES TO CURE THE SAME.
Claim 2
Independent Claim
77 words
A METHOD OF PREPARING AN OIL RESISTANT RUBBER COMPRISING MIXING A RUBBERY CONJUGATED DIENE/HETEROCYCLIC NITROGEN BASE POLYMER WITH COMPOUNDING INGREDIENTS INCLUDING A VULCANIZING AGENT AND CHLORANIL WHILE MAINTAINING THE TEMPERATURE BELOW 230*F., THE AMOUNT OF SAID CHLORANIL BEING IN THE RANGE OF 3 TO 20 PARTS BY WEIGHT PER 100 PARTS OF SAID RUBBERY POLYMER, AND THEREAFTER HEATING THE RESULTING MIXTURE AT A TEMPERATURE OF 250 TO 350*F. FOR 5 TO 90 MINUTES TO CURE THE SAME.
References Cited (Backward Citations)
US2658092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |