US2842183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mica paper
Assignee: General Electric Co
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Filing: 1956-09-24
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Granted: 1958-07-08
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Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jr George L Gaines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/44; C; C04; C04B; C04B30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF PREPARING MICA PAPER OF IMPROVED TENSILE STRENGTH WHICH COMPRISES CONTACTING COMMINUTED MICA PARTICLES WITH AN AQUEOUS BARIUM SALT SOLUTUON, FORMING A WET PAPER-LIKE SHEET FROM SAID PARTICLES, AND DRYING SAID SHEET, SAID BARIUM SALT BEING CHARACTERIZED BY A ROOM TEMPERATURE SOLUBILITY OF AT LEAST ABOUT 0.5 PART BY WEIGHT PER 100 PARTS BY WEIGHT OF WATER.
Claim 2
Independent Claim
59 words
THE METHOD OF PREPARING MICA PAPER OF IMPROVED TENSILE STRENGTH WHICH COMPRISES CONTACTING COMMINUTED MICA PARTICLES WITH AN AQUEOUS BARIUM SALT SOLUTUON, FORMING A WET PAPER-LIKE SHEET FROM SAID PARTICLES, AND DRYING SAID SHEET, SAID BARIUM SALT BEING CHARACTERIZED BY A ROOM TEMPERATURE SOLUBILITY OF AT LEAST ABOUT 0.5 PART BY WEIGHT PER 100 PARTS BY WEIGHT OF WATER.
References Cited (Backward Citations)
US2669764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |