US3275720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extruding foamed fibers having outer skins integral therewith
Assignee: Haveg Industries Inc
•
Filing: 1963-04-30
•
Granted: 1966-09-27
•
Expires: 1983-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Ohsol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:29
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; D01D5/22; D01D5/28; D01D5/30; D01D5/34; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS OF PREPARING A FIBER OF A THERMOPLASTIC RESIN FOAM COMPRISING EXTRUDING A FIBER OF A FOAMABLE THERMOPLASTIC RESIN, QUENCHING THE SURFACE ONLY OF SAID FIBER BELOW THE FOAMING TEMPERATURE WHILE PERMITTING FIBER TO EXPAND TO A DENSITY OF BETWEEN 14 AND 45 LBS./CU. FT. WHEREBY THERE IS PRODUCED A FIBER HAVING A FOAMED RESIN CORE AND AN IMPERVIOUS OUTER SKIN INTEGRAL WITH SAID CORE, THE COOLING BEING SUFFICIENT THAT 50 T 95% OF THE DIAMETER OF SAID FIBER IS THE FOAMED CORE AND THE BALANCE IS SAID SKIN AND DRAWING SAID FIBER TO ORIENT IT LONGITUDINALLY.
Claim 2
Dependent Claim
98 words
A PROCESS OF PREPARING A FIBER OF A THERMOPLASTIC RESIN FOAM COMPRISING EXTRUDING A FIBER OF A FOAMABLE THERMOPLASTIC RESIN, QUENCHING THE SURFACE ONLY OF SAID FIBER BELOW THE FOAMING TEMPERATURE WHILE PERMITTING FIBER TO EXPAND TO A DENSITY OF BETWEEN 14 AND 45 LBS./CU. FT. WHEREBY THERE IS PRODUCED A FIBER HAVING A FOAMED RESIN CORE AND AN IMPERVIOUS OUTER SKIN INTEGRAL WITH SAID CORE, THE COOLING BEING SUFFICIENT THAT 50 T 95% OF THE DIAMETER OF SAID FIBER IS THE FOAMED CORE AND THE BALANCE IS SAID SKIN AND DRAWING SAID FIBER TO ORIENT IT LONGITUDINALLY.
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |