US2810775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate separator for storage batteries
Assignee: WR Grace and Co
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Filing: 1956-02-16
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Granted: 1957-10-22
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Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Raphael Thomas
- 👤 Richard W Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:20
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/429; H01M50/4295; H01M50/44; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A METHOD FOR RENDERING ONE SURFACE OF A PLATE SEPARATOR FOR STORAGE BATTERIES, FORMED OF A WATER-LAID FELT IMPREGNATED WITH A SYNTHETIC, ACID-RESISTANT, THERMOSET RESIN, RESISTANT TO OXIDATION IN THE PRESENCE OF LEAD DIOXIDE, WHICH COMPRISES SPRAYING THAT SURFACE WITH AN AQUEOUS DISPERSION OF AN ACID- AND OXIDATION-RESISTANT THERMOSPLASTIC RESIN AT A RATE OF BETWEEN 1.2 AND 6 POUNDS OF DISPERSION SOLIDS PER 100 SQUARE FEET OF SEPARATOR MATERIAL SURFACE AND SUBSEQUENTLY FLUXING THE THERMOPLASTIC RESIN.
Claim 2
Independent Claim
76 words
A METHOD FOR RENDERING ONE SURFACE OF A PLATE SEPARATOR FOR STORAGE BATTERIES, FORMED OF A WATER-LAID FELT IMPREGNATED WITH A SYNTHETIC, ACID-RESISTANT, THERMOSET RESIN, RESISTANT TO OXIDATION IN THE PRESENCE OF LEAD DIOXIDE, WHICH COMPRISES SPRAYING THAT SURFACE WITH AN AQUEOUS DISPERSION OF AN ACID- AND OXIDATION-RESISTANT THERMOSPLASTIC RESIN AT A RATE OF BETWEEN 1.2 AND 6 POUNDS OF DISPERSION SOLIDS PER 100 SQUARE FEET OF SEPARATOR MATERIAL SURFACE AND SUBSEQUENTLY FLUXING THE THERMOPLASTIC RESIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |