US3143436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making breathable films and coated fabrics
Assignee: Uniroyal Inc
•
Filing: 1960-10-20
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Granted: 1964-08-04
•
Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Lucian P Dosmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:15
CPC Classifications
A; A41; A41D; A41D31/00; B; B32; B32B; B32B27/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A METHOD FOR MAKING BREATHABLE FILM COMPRISING INTERMPERSING FROM 10 TO 50 PARTS BY WEIGHT OF FRIABLE HOLLOW SPHERICAL PARTICLES IN 100 PARTS BY WEIGHT OF A COMPOSITION SELECTED FROM THE GROUP CONSISTING OF THERMOPLASTICS AND THEROSETTING ELASTOMERS, SAID COMPOSITION BEING SUFFICIENTLY SOFT TO PREVENT THESE PARTICLES FROM FRACTURING DURING THE COMPOUNDING AND MIXING THEREOF AND SAID PARTICLES ALL HAVING DIAMETERS LESS THAN THE THICKNESS OF THE FILM TO BE FORMED AND BEING CHEMICALLY INERT WITH RESPECT TO SUCH COMPOSITIONS AND INSOLUBLE THEREIN, CASTING THE INTERSPERSION INTO A FILM, ALLOWING SAID INTERSPERSION TO SET, AND SUBSEQUENTLY SUBJECTING THE FILM TO CRUSHING FORCES, THEREBY PRODUCING PLURALITIES OF MINUTE PASSAGEWAYS THROUGHOUT THE FILM.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US3016308A
Cited
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Cited
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |