Patent US3959534A successfully refreshed from Google Patents.
US3959534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing fibers
Assignee: Union Carbide Corp
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Filing: 1973-04-23
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Granted: 1976-05-25
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Expires: 1993-04-23
Abstract
Abstract Copolymers of ethylene with acrylic acid or methacrylic acid are used as lubricants in the high temperature, high speed production and processing of synthetic textile fibers.
Inventors
- 👤 Kisoon Park
- 👤 Ronald L. Readshaw
- 👤 George H. Lourigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:42
CPC Classifications
D; D06; D06M; D06M7/00; D06M2200/00; D06M2200/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
In a method for manufacturing or processing synthetic textile fibers comprising applying an effective amount of lubricants to the surface of said fibers, the improvement consisting of using aqueous dispersions of ethylene/acrylic acid or ethylene/methacrylic acid copolymers as the lubricants.
Claim 2
Dependent Claim
40 words
In a method for manufacturing or processing synthetic textile fibers comprising applying an effective amount of lubricants to the surface of said fibers, the improvement consisting of using aqueous dispersions of ethylene/acrylic acid or ethylene/methacrylic acid copolymers as the lubricants.
Claim 3
Dependent Claim
13 words
A method as claimed in claim 1 wherein said copolymer is ethylene/acrylic acid.
Claim 4
Dependent Claim
13 words
A method as claimed in claim 1 wherein said copolymer is ethylene/methacrylic acid.
References Cited (Backward Citations)
US1976679A
Cited
US2892791A
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US3032538A
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US3486929A
Cited
US3310428A
Cited
US3250103A
Cited
US3267035A
Cited
US3650664A
Cited
US3741925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |