US2850559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery separator and method of making same
Assignee: Texon Inc
•
Filing: 1955-01-10
•
Granted: 1958-09-02
•
Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Wesley N Stickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/40; H01M50/463; H01M50/409; H01M50/411; H01M50/414; H01M50/429; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF MAKING A LIQUID PERMEABLE BATTERY SEPARATOR, WHICH COMPRISES SATURATING A THIN WEB OF AN AIR PERMEABLE PAPER BASE MATERIAL WITH A THEREMOSETTING PHENOL-FORMALDEHYDE RESIN IN THE A-STAGE, HEATING THE WEB ALONG SPACE ELONGATED PORTIONS TO A TEMPERATURE BELOW THE SETTING TEMPERATURE OF THE RESIN BUT IN THE RANGE OF 50*-80*C., SHAPING THE WEB ALONG SAID ELONGATED PORTIONS TO FORM RIBS WHILE THE RESIN IS AT SAID TEMPERATURE RANGE AND WHILE DISPLACING RESIN FROM THE HIGH PORTIONS OF THE RIBS TOWARD THE BASE PORTIONS THEREOF UNDER PRESSURE TO CAUSE A FLOW OF RESIN LATERALLY OF THE RIBS, AND HEATING THE WEB TO SET THE RESIN.
Claim 2
Independent Claim
107 words
THE METHOD OF MAKING A LIQUID PERMEABLE BATTERY SEPARATOR, WHICH COMPRISES SATURATING A THIN WEB OF AN AIR PERMEABLE PAPER BASE MATERIAL WITH A THEREMOSETTING PHENOL-FORMALDEHYDE RESIN IN THE A-STAGE, HEATING THE WEB ALONG SPACE ELONGATED PORTIONS TO A TEMPERATURE BELOW THE SETTING TEMPERATURE OF THE RESIN BUT IN THE RANGE OF 50*-80*C., SHAPING THE WEB ALONG SAID ELONGATED PORTIONS TO FORM RIBS WHILE THE RESIN IS AT SAID TEMPERATURE RANGE AND WHILE DISPLACING RESIN FROM THE HIGH PORTIONS OF THE RIBS TOWARD THE BASE PORTIONS THEREOF UNDER PRESSURE TO CAUSE A FLOW OF RESIN LATERALLY OF THE RIBS, AND HEATING THE WEB TO SET THE RESIN.
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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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |