US3323978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial textile fibres and their production
Assignee: Phillips Petroleum Co
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Filing: 1963-05-09
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Granted: 1967-06-06
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Rasmussen Ole-Bendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/08; Y10S264/47; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2973; Y10T428/2978
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A FIBROUS PRODUCT OF ORGANIC SYNTHETIC MATERIAL COMPRISING A PLURALITY OF FIBRES IN A COHERENT NETWORK IN WHICH EACH FIBRE ELEMENT HAS A TWO-PHASE STRUCTURE INCLUDING A CONTINUOUS CORE PORTION OF AN ORIENTED, NORMALLY CRYSTALLINE, PREDOMINANTLY HYDROPHOBIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYVINYLIDENE CHLORIDE, AND A DISCONTINUOS SURFACE PORTION OF A DIFFERENT DISTINCTLY HYDROPHILIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL ALCOHOL, POLYOXYETHYLENE, COPOLYMERIZATES OF ACRYLIC ACID AND OF METHACRYLIC ACID, AND HYDROLYZED POLYMERS SELECTED FROM THE GROUP CONSISTING OF ESTERS OF POLYACIDS, ESTERS OF POLYALCOHOLS AND ACETALS OF POLYALCOHOLS.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |