US3462938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for producing crimped heterofilament yarns
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-04-25
•
Granted: 1969-08-26
•
Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Parvez Naoroji Mehta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:57
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286; D01; D01D; D01D5/00; D01D5/22; D02G1/0206; D02G1/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB950429A
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US3329757A
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US3273328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |