US3169089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filaments
Assignee: Celanese Corp
•
Filing: 1960-04-22
•
Granted: 1965-02-09
•
Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Miller William Burton
- 👤 Bishop Clarence Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:05
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
FILAMENTARY MATERIAL HAVING A FOUR-LEAF CLOVER CROSSSECTION WHICH IS SUBSTANTIALLY UNIFORM ALONG THE LENGTH OF THE FILAMENTARY MATERIAL, SAID CROSS-SECTION INCLUDING FOUR SUBSTANTIALLY SMOOTH ROUNDED LOBES EXTENDING INDEPENDENTLY AND SUBSTANTIALLY SYMMETRICALLY FROM A CENTRAL CORE, EACH OF SAID LOBES BEING NARROWEST WHERE IT IS JOINED TO SAID CORE AND HAVING ITS MACIMUM WIDTH NEARER TO THE OUTERMOST EXTREMITY OF SAID LOBE THAN TO SAID CORE AND CONTINUOUSLY INCREASING IN WIDTH FROM SAID NARROWEST PORTION TO SAID MAXIMUM WIDTH, SAID LOBES COMPLETELY SURROUNDING SAID CORE EXCEPT FOR THE NARROW RADIAL SPACES, OF LESSER WIDTH THAN SAID LOBES, BETWEEN SAID LOBES.
Claim 2
Dependent Claim
99 words
FILAMENTARY MATERIAL HAVING A FOUR-LEAF CLOVER CROSSSECTION WHICH IS SUBSTANTIALLY UNIFORM ALONG THE LENGTH OF THE FILAMENTARY MATERIAL, SAID CROSS-SECTION INCLUDING FOUR SUBSTANTIALLY SMOOTH ROUNDED LOBES EXTENDING INDEPENDENTLY AND SUBSTANTIALLY SYMMETRICALLY FROM A CENTRAL CORE, EACH OF SAID LOBES BEING NARROWEST WHERE IT IS JOINED TO SAID CORE AND HAVING ITS MACIMUM WIDTH NEARER TO THE OUTERMOST EXTREMITY OF SAID LOBE THAN TO SAID CORE AND CONTINUOUSLY INCREASING IN WIDTH FROM SAID NARROWEST PORTION TO SAID MAXIMUM WIDTH, SAID LOBES COMPLETELY SURROUNDING SAID CORE EXCEPT FOR THE NARROW RADIAL SPACES, OF LESSER WIDTH THAN SAID LOBES, BETWEEN SAID LOBES.
References Cited (Backward Citations)
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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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |