Patent US3210218A successfully refreshed from Google Patents.
US3210218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing battery separators
Assignee: Nihon Mukiseni Kogyo KK
•
Filing: 1962-07-12
•
Granted: 1965-10-05
•
Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Kawai Motochika
- 👤 Oba Katsumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:14
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/489; H01M50/491; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A MANUFACTURING PROCESS OF A STORAGE BATTERY SEPARATOR WHICH PROCESS CONSISTS OF PREPARING A MIXED SOLVENT BY MIXING 1 PART OF CYCLOHEXANONE WHICH IS A STRONG SOLVENT FOR VINYL CHLORIDES WITH 3 TO 4 PARTS OF SOLVENT NAPHTHA, DISSOLVING IN SAID MIXED SOLVENT 1 PART BY WEIGHT OF A PLASTIC MEMBER OF THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND A CO-POLYMER OF VINYL CHLORIDE AND VINYL ACETATE TO CONSTITUTE A SOL SOLUTION, MAKING A DOUGH BY ADDING TO SAID SOL SOLUTION 1.5 TO 4 PARTS BY WEIGHT OF FINE POWDER OF DIATOMACEOUS EARTH, THEN MAKING A PUTTY MATERIAL BY ADDING TO SAID DOUGH AMMONIUM OLEATE IN AMOUNTS TO ABOVE ONE-QUARTER OF SAID PLASTIC AND ALSO ADDING WATER IN AMOUNTS TO BELOW ONE-EIGHTH OF SAID MIXED SOLVENT, AND EXTRUDING SAID PUTTY MATERIAL INTO ANY DESIRED SHAPE, AND THEN DRYING THE SAME.
Claim 2
Dependent Claim
140 words
A MANUFACTURING PROCESS OF A STORAGE BATTERY SEPARATOR WHICH PROCESS CONSISTS OF PREPARING A MIXED SOLVENT BY MIXING 1 PART OF CYCLOHEXANONE WHICH IS A STRONG SOLVENT FOR VINYL CHLORIDES WITH 3 TO 4 PARTS OF SOLVENT NAPHTHA, DISSOLVING IN SAID MIXED SOLVENT 1 PART BY WEIGHT OF A PLASTIC MEMBER OF THE GROUP CONSISTING OF POLYVINYL CHLORIDE AND A CO-POLYMER OF VINYL CHLORIDE AND VINYL ACETATE TO CONSTITUTE A SOL SOLUTION, MAKING A DOUGH BY ADDING TO SAID SOL SOLUTION 1.5 TO 4 PARTS BY WEIGHT OF FINE POWDER OF DIATOMACEOUS EARTH, THEN MAKING A PUTTY MATERIAL BY ADDING TO SAID DOUGH AMMONIUM OLEATE IN AMOUNTS TO ABOVE ONE-QUARTER OF SAID PLASTIC AND ALSO ADDING WATER IN AMOUNTS TO BELOW ONE-EIGHTH OF SAID MIXED SOLVENT, AND EXTRUDING SAID PUTTY MATERIAL INTO ANY DESIRED SHAPE, AND THEN DRYING THE SAME.
References Cited (Backward Citations)
US2772322A
Cited
GB828683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |