US3690978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing tape-shaped assembly of elastic filaments
Assignee: Toyobo Co Ltd
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Filing: 1969-08-25
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Granted: 1972-09-12
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Expires: 1989-08-25
Abstract
Abstract METHOD OF PRODUCING TAPE-SHAPED ASSEMBLY OF MELT SPINNING AN ELASTIC POLYMER INTO FILAMENS, COOLING THE FILAMENTS, ARRANGING THE FILAMENTS WHILE STILL TACKY TO EFFECT SIDE-BY-SIDE CONTACT WITH ADJACENT FILAMENTS AND TO FORM A UNITARY ASSEMBLY, AND DRAWING THE ASSEMBLY TO ADJUST THE SEPRATING ELONGATION (DEFINED IN SPECIFICATION) BETWEEN ADJACENT FILAMENTS TO LESS THAN 150%.
Inventors
- 👤 Hirofumi Nishizawa
- 👤 Shigeo Kitaura
- 👤 Misao Sumoto
- 👤 Hideki Komagata
- 👤 Hirosi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:41
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/328; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/68; Y10T442/69
Claims Analysis
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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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |