US3231650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven polyolefin fabrics and method of preparing same
Assignee: Phillips Petroleum Co
•
Filing: 1960-03-11
•
Granted: 1966-01-25
•
Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert A Findlay
- 👤 Jr John N Scott
- 👤 Bottomley Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2738
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A METHOD FOR THE MANUFACTURE OF NON-WOVEN POLYOLEFIN FABRIC FROM POLYOLEFIN FIBERS WHEREIN AN AGGREGATE OF POLYOLEFIN FIBERS IS FORMED INTO A NON-WOVEN WEB, THE IMPROVEMENT WHICH COMPRISES DISPOSING A HYDROCARBON OIL HAVING A BOILING POINT IN EXCESS OF THE SOFTENING POINT OF SAID FIBERS AND BEING A SLVENT FOR SAID FIBERS AT THE POINTS OF CONTACT OF SAID INDIVIDUAL FIBERS; EXERTING AN EXTERNALLY APPLIED PRESSURE TO THE NON-WOVEN FABRIC SUFFICIENT TO CAUSE INTIMATE ASSOCIATION OF THE INDIVIDUAL FIBERS AT THEIR CONTACT POINTS; SIMULTANEOUSLY HEATING THE AGGRE-
Claim 2
Dependent Claim
88 words
IN A METHOD FOR THE MANUFACTURE OF NON-WOVEN POLYOLEFIN FABRIC FROM POLYOLEFIN FIBERS WHEREIN AN AGGREGATE OF POLYOLEFIN FIBERS IS FORMED INTO A NON-WOVEN WEB, THE IMPROVEMENT WHICH COMPRISES DISPOSING A HYDROCARBON OIL HAVING A BOILING POINT IN EXCESS OF THE SOFTENING POINT OF SAID FIBERS AND BEING A SLVENT FOR SAID FIBERS AT THE POINTS OF CONTACT OF SAID INDIVIDUAL FIBERS; EXERTING AN EXTERNALLY APPLIED PRESSURE TO THE NON-WOVEN FABRIC SUFFICIENT TO CAUSE INTIMATE ASSOCIATION OF THE INDIVIDUAL FIBERS AT THEIR CONTACT POINTS; SIMULTANEOUSLY HEATING THE AGGRE-
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |