US2730758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the production of crimped filaments
Assignee: Bridgestone Firestone Inc
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Filing: 1954-07-21
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Granted: 1956-01-17
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Expires: 1974-07-21
Abstract
No abstract record available.
Inventors
- 👤 John W Morrell
- 👤 Walter J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:08
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/22; D01D5/08; D01D5/088; D01D5/0885
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
AN APPARATUS FOR THE MANUFACTURE OF CRIMPED FILAMENTS FROM CRYSTALLINE POLYMERIC RESINS COMPRISING A MELT SPINNING HEAD HAVING A DIE PROVIDED WITH A PLURALITY OF SPINNING ORIFICES ARRANGED IN A CIRCLE AND DIRECTED VERTICALLY DOWNWARDLY AND MEANS DISPOSED BELOW AND COAXIALLY
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |