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US4083683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-containing polypropylene dyed with 1,4-bis-(2'-methyl-6'-ethylanilino)anthraquinone
Assignee: American Color and Chemical LLC
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Filing: 1977-03-11
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Granted: 1978-04-11
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Expires: 1997-03-11
Abstract
Abstract Metal-containing polypropylene fibers dyed with a blue dye of the formula: ##STR1## are provided. The dyed polypropylene exhibits outstanding fastness to light and dry-cleaning solvents.
Inventors
- 👤 Raouf Botros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:04
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/325; D; D06; D06P; D06P3/00; D06P3/79; D06P3/795; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928; Y10S8/929
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
Dyed metal-containing polypropylene fibers, the dye being: ##STR5## the metal of said metal-containing polypropylene fibers being selected from the group consisting of aluminum, nickel and zinc.
Claim 2
Dependent Claim
26 words
Dyed metal-containing polypropylene fibers, the dye being: ##STR5## the metal of said metal-containing polypropylene fibers being selected from the group consisting of aluminum, nickel and zinc.
Claim 3
Dependent Claim
17 words
The dyed metal-containing polypropylene fibers of claim 1, wherein the metal-containing polypropylene fibers are nickel-containing polypropylene fibers.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |