US3476850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low elongation set spandex filaments and process for the preparation thereof
Assignee: Kuraray Co Ltd
•
Filing: 1967-04-03
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Granted: 1969-11-04
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 Kanji Matsubayashi
- 👤 Hiroyuji Segawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:29
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/70; Y; Y10; Y10S; Y10S264/00; Y10S264/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2755266A
Cited
US2957852A
Cited
US2956330A
Cited
GB916287A
Cited
US3227972A
Cited
US3353344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |