Patent US3029225A successfully refreshed from Google Patents.
US3029225A
Expired / Lapsed
US
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Temperature and solvent resistance of elastomers
Assignee: Bjorksten Research Laboratories Inc
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Filing: 1956-02-20
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Granted: 1962-04-10
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2333/00; C08J2333/04; C08J2333/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR PREPARING A SYNTHETIC RUBBER BODY HAVING NON-POLAR FLEXIBLE INTERIOR AND HIGHLY POLAR SOLVENT RESISTANT SKIN COMPRISING THE STEPS OF PROVIDING A VULCANIZATE BY REACTING A COPOLYMER OF A MONOMERIC MIXTURE CONSISTING OF 98.5 PARTS BY WEIGHT OF AN ALKYL ACRYLATE AND 1.5 PARTS BY WEIGHT OF A VINYL TRIETHOXY SILANE WITH A VULCANIZING AGENT, IMMERSING THE VULCANIZATE IN A BOILING ALKALI METAL HYDROXIDE HAVING A CONCENTRATION OF FROM .2 TO 1.5 NORMALITY FOR A PERIOD OF ABOUT 10 TO 40 MINUTES.
Claim 2
Dependent Claim
84 words
A PROCESS FOR PREPARING A SYNTHETIC RUBBER BODY HAVING NON-POLAR FLEXIBLE INTERIOR AND HIGHLY POLAR SOLVENT RESISTANT SKIN COMPRISING THE STEPS OF PROVIDING A VULCANIZATE BY REACTING A COPOLYMER OF A MONOMERIC MIXTURE CONSISTING OF 98.5 PARTS BY WEIGHT OF AN ALKYL ACRYLATE AND 1.5 PARTS BY WEIGHT OF A VINYL TRIETHOXY SILANE WITH A VULCANIZING AGENT, IMMERSING THE VULCANIZATE IN A BOILING ALKALI METAL HYDROXIDE HAVING A CONCENTRATION OF FROM .2 TO 1.5 NORMALITY FOR A PERIOD OF ABOUT 10 TO 40 MINUTES.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |