US3365358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asbestos saturating paper including cellular hollow gas-containing resin spheres
Assignee: Johns Manville Corp
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Filing: 1963-01-02
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Granted: 1968-01-23
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Marsden C Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:50
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/42; D21H5/00; D21H5/12; D21H5/18; D21H5/183; Y; Y10; Y10S; Y10S264/00; Y10S264/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A GOOD WET AND DRY STRENGTH, HIGH BULK ASBESTOS PAPER PRODUCT CONTAINING AT LEAST APPROXIMATELY 25% BY WEIGHT THEREOF OF LIGHT WEIGHT CELLULAR SPHERES HAVING AN AVERAGE DIAMETER OF ABOUT 1 TO 500 MICRONS, SAID PAPER PRODUCT CONSISTING OF ESSENTIALLY OF APPROXIMATELY 20 TO 75 PARTS BY WEIGHT OF REFINED, HARSH ASBESTOS FIBER HAVING A SCHOPPER-RIEGLER FREENESS VALUE OF ABOUT 180 TO 560, APPROXIMATELY 4 TO 10 PARTS BY WEIGHT OF SIZE OF AT LEAST ONE RESIN SELECTED FROM THE GROUP CONSISTING OF ACRYLIC RESIN AND UREA FORMALDEHYDE RESIN, AND APPROXIMATELY 25 TO 65 PARTS BY WEIGHT OF LIGHT WEIGHT CELLULAR HOLLOW GAS-CONTAINING RESIN SPHERES HAVING AN AVERAGE DIAMETER OF APPROXIMATELY 1 TO 500 MICRONS.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |