Patent US2847496A successfully refreshed from Google Patents.
US2847496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-fiber-tube type lead-acid storage battery plate
Assignee: Individual
•
Filing: 1955-10-05
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Granted: 1958-08-12
•
Expires: 1975-10-05
Abstract
No abstract record available.
Inventors
- 👤 Yamaura Masao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:52
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/76; H01M4/765; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR MAKING A POROUS TUBE FOR A LEAD ACID STORAGE BATTERY POSITIVE PLATE COMPRISING THE STEPS OF LAYING GLASS FILAMENTS AT RIGHT ANGLES WITH EACH OTHER TO FORM A MAT, CUTTING SAID MAT INTO REQUIRED RECTANGULAR SIZES WITH ITS WIDTHS EQUAL TO THE LENGTH OF THE TUBE TO BE ROLLED, ROLLING SAID MAT SEVERAL TIMES AROUND A MANDREL, IMPREGNATING SAID ROLLED MAT WITH A WATER SUSPENSION OF COPOLYMERIZED VINYL CHLORIDE-VINYLIDENE CHLORIDE, THE POLYMERIZATION DEGREE OF SAID VINYL CHLORIDE-VINYLIDENE CHLORIDE BEING IN THE RANGE OF 200 TO 300, DRYING SAID ROLLED MAT AND CUTTING SAID ROLLED MAT INTO THE REQUIRED LENGTH.
Claim 2
Independent Claim
102 words
A METHOD FOR MAKING A POROUS TUBE FOR A LEAD ACID STORAGE BATTERY POSITIVE PLATE COMPRISING THE STEPS OF LAYING GLASS FILAMENTS AT RIGHT ANGLES WITH EACH OTHER TO FORM A MAT, CUTTING SAID MAT INTO REQUIRED RECTANGULAR SIZES WITH ITS WIDTHS EQUAL TO THE LENGTH OF THE TUBE TO BE ROLLED, ROLLING SAID MAT SEVERAL TIMES AROUND A MANDREL, IMPREGNATING SAID ROLLED MAT WITH A WATER SUSPENSION OF COPOLYMERIZED VINYL CHLORIDE-VINYLIDENE CHLORIDE, THE POLYMERIZATION DEGREE OF SAID VINYL CHLORIDE-VINYLIDENE CHLORIDE BEING IN THE RANGE OF 200 TO 300, DRYING SAID ROLLED MAT AND CUTTING SAID ROLLED MAT INTO THE REQUIRED LENGTH.
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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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |