US3287787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selectively weakening crimped polyester filaments and fibers
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1961-09-29
•
Granted: 1966-11-29
•
Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Goulding Geoffrey Leonard
- 👤 Barr Keith Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:11
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/38; D06M11/58; D06M11/59; D06M11/60; D06M13/00; D06M13/322; D06M13/325; D06M13/332; D06M15/00; D06M15/19; D06M15/37; D06M15/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR TREATING CRIMPED ORIENTED POLYESTER FILAMENTS AND FIBRES, BEFORE HEAT SETTING THE CRIMP, WITH A CHEMICAL AGENT UNDER CONDITIONS SUCH THAT THE FILAMENTS AND FIBRES ARE SELECTIVELY WEAKENED AT INTERVALS CORRESPONDING TO THE APEXES OF THEIR CRIMP BY THE UNIFORM APPLICATION OF THE CHEMICAL AGENT, THE FILAMENTS AND FIBERS BETWEEN SAID INTERVALS BEING SUBSTANTIALLY LESS AFFECTED BY SAID CHEMICAL AGENT WHEREBY THE FIBERS ARE FILAMENTS ARE PREDISPOSED TO BREAK IN SAID INTERVALS.
Claim 2
Dependent Claim
74 words
A PROCESS FOR TREATING CRIMPED ORIENTED POLYESTER FILAMENTS AND FIBRES, BEFORE HEAT SETTING THE CRIMP, WITH A CHEMICAL AGENT UNDER CONDITIONS SUCH THAT THE FILAMENTS AND FIBRES ARE SELECTIVELY WEAKENED AT INTERVALS CORRESPONDING TO THE APEXES OF THEIR CRIMP BY THE UNIFORM APPLICATION OF THE CHEMICAL AGENT, THE FILAMENTS AND FIBERS BETWEEN SAID INTERVALS BEING SUBSTANTIALLY LESS AFFECTED BY SAID CHEMICAL AGENT WHEREBY THE FIBERS ARE FILAMENTS ARE PREDISPOSED TO BREAK IN SAID INTERVALS.
References Cited (Backward Citations)
US2907094A
Cited
US2781242A
Cited
GB840796A
Cited
US2897042A
Cited
DE1024482B
Cited
DE1033175B
Cited
DE1034133B
Cited
US2828528A
Cited
US2999296A
Cited
US3034196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |