US3549467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile fabric having fibrillated pile yarn and method of making same
Assignee: Celanese Corp
•
Filing: 1967-01-03
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Granted: 1970-12-22
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Keuchel
- 👤 Emmett F Greenwald
- 👤 Richard A Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/125; Y; Y10; Y10S; Y10S264/00; Y10S264/08; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23993; Y10T428/249921; Y10T428/249953
Claims Analysis
Total Claims: 0
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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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |