US3122409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing or printing structures of olefines of low molecular weight
Assignee: BASF Schweiz AG
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Filing: 1961-09-05
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Granted: 1964-02-25
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Klaus J Bardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:56
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/793; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PROCESS FOR DYEING POLYPROPYLENE FIBERS WHEREIN AN ACID LEUCO COMPOUND OF A VAT DYESTUFF IS APPLIED TO SAID FIBERS AS A FINE DISPERSION FROM AN AQUEOUS MEDIUM AND THE DYESTUFF IS FIXED THEREON BY THE ACTION OF HEAT.
Claim 2
Dependent Claim
39 words
A PROCESS FOR DYEING POLYPROPYLENE FIBERS WHEREIN AN ACID LEUCO COMPOUND OF A VAT DYESTUFF IS APPLIED TO SAID FIBERS AS A FINE DISPERSION FROM AN AQUEOUS MEDIUM AND THE DYESTUFF IS FIXED THEREON BY THE ACTION OF HEAT.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |