US3239381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separator impregnated with a phenol-aldehyde resin composition
Assignee: Monsanto Co
•
Filing: 1962-05-21
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Granted: 1966-03-08
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 O'connell Frank Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:05
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/44; H01M50/411; H01M50/429; H01M50/4295; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CELLULOSIC FIBROUS PERMEABLE BATTERY SEPARATOR WHICH IS THOROUGHLY IMPREGNATED WITH A RESIN COMPOSITION, SAID RESIN COMPOSITION COMPRISING IN ADMIXTURE A PHENOL-ALDEHYDE RESIN AND A SURFACE ACTIVE AGENT WHEREIN THE PHENOL-ALDEHYDE RESIN IN ADVANCED TO AN INFUSIBLE STATE AND THE SURFACE ACTIVE AGENT HAS A NUMBER AVERAGE MOLECULAR WEIGHT OF ABOUT 500 TO ABOUT 10,000 AND CONSISTS OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF A NITROGEN CONTAINING REACTIVE HYDROGEN COMPOUND HAVING NOT MORE THAN 6 CARBON ATOMS PER MOLECULE AND HAVING 2-6 REACTIVE HYDROGEN ATOMS, THE STRUCTURE OF THE COMPOUND BEING SUCH THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN OXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE REACTIVE HYDROGEN ATOMS AND ALL OF THE OXYETHYLENE GROUPS ARE PRESENT IN OXYETHYLENE CHAINS THAT ARE ATTACHED TO THE ENDS OF THE OXYPROPYLENE CHAINA.
Claim 2
Dependent Claim
134 words
A CELLULOSIC FIBROUS PERMEABLE BATTERY SEPARATOR WHICH IS THOROUGHLY IMPREGNATED WITH A RESIN COMPOSITION, SAID RESIN COMPOSITION COMPRISING IN ADMIXTURE A PHENOL-ALDEHYDE RESIN AND A SURFACE ACTIVE AGENT WHEREIN THE PHENOL-ALDEHYDE RESIN IN ADVANCED TO AN INFUSIBLE STATE AND THE SURFACE ACTIVE AGENT HAS A NUMBER AVERAGE MOLECULAR WEIGHT OF ABOUT 500 TO ABOUT 10,000 AND CONSISTS OF OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND THE NUCLEUS OF A NITROGEN CONTAINING REACTIVE HYDROGEN COMPOUND HAVING NOT MORE THAN 6 CARBON ATOMS PER MOLECULE AND HAVING 2-6 REACTIVE HYDROGEN ATOMS, THE STRUCTURE OF THE COMPOUND BEING SUCH THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN OXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE REACTIVE HYDROGEN ATOMS AND ALL OF THE OXYETHYLENE GROUPS ARE PRESENT IN OXYETHYLENE CHAINS THAT ARE ATTACHED TO THE ENDS OF THE OXYPROPYLENE CHAINA.
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |