US4070505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of imparting paramagnetic susceptibility to cotton fibers
Assignee: United States Department of Agriculture
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Filing: 1976-02-24
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Granted: 1978-01-24
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Expires: 1996-02-24
Abstract
Abstract Paramagnetic susceptibility has been imparted to raw unprocessed cotton fibers by impregnating the fibers with a paramagnetic organometallic rare earth compound dissolved in hydrocarbon solvent. The strength of the imparted property is sufficient to allow for the manipulation of the textile fibers by magnetic force fields in conjunction with radically new techniques of textile processing. The paramagnetic susceptibility is removable and whatever paramagnetic compound use is recoverable.
Inventors
- 👤 Albert Baril, Jr.
- 👤 Mayer Mayer, Jr.
- 👤 Devron P. Thibodeaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:13
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/42; D; D06; D06M; D06M13/00; D06M13/50; D06M13/503; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A method of imparting paramagnetic susceptibility to raw unprocessed cotton fibers to provide a means of manipulating said fibers in a magnetic force field, the method consisting essentially of: a. impregnating cotton fibers with a solution consisting of about from 1% to 10% by weight of a paramagnetic organometallic rare earth compound selected from the group consisting of dysprosium acetylacetonate and holmium acetylacetonate dissolved in an organic solvent selected from the group consisting of benzene, chloroform, ethyl ether, and hexane; and b. drying the wet impregnated cotton fibers to obtain fibers with a paramagnetic susceptibility of about from 10 -6 to 10 -5 electromagnetic units per gram (emu/gm) which is sufficient to render the fibers reactive to magnetic forces.
Claim 2
Independent Claim
119 words
A method of imparting paramagnetic susceptibility to raw unprocessed cotton fibers to provide a means of manipulating said fibers in a magnetic force field, the method consisting essentially of: a. impregnating cotton fibers with a solution consisting of about from 1% to 10% by weight of a paramagnetic organometallic rare earth compound selected from the group consisting of dysprosium acetylacetonate and holmium acetylacetonate dissolved in an organic solvent selected from the group consisting of benzene, chloroform, ethyl ether, and hexane; and b. drying the wet impregnated cotton fibers to obtain fibers with a paramagnetic susceptibility of about from 10 -6 to 10 -5 electromagnetic units per gram (emu/gm) which is sufficient to render the fibers reactive to magnetic forces.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the organometallic compound is dysprosium acetylacetonate.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the organometallic compound is holmium acetylacetonate.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein the solvent is chloroform.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the solvent is ethyl ether.
Claim 7
Dependent Claim
10 words
The process of claim 1 wherein the solvent is benzene.
Claim 8
Dependent Claim
10 words
The process of claim 1 wherein the solvent is hexane.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |