US3006882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing fiber-forming polyamides from the melt
Assignee: BASF Schweiz AG
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Filing: 1959-09-18
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Granted: 1961-10-31
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Expires: 1979-09-18
Abstract
No abstract record available.
Inventors
- 👤 Altermatt Hans
- 👤 Koch Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437; C09; C09B; C09B5/00; C09B5/62; D; D01; D01F; D01F1/00; D01F1/02; D01F1/06; D01F6/00; D01F6/58; D01F6/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR DYEING FIBER-FORMING POLYAMIDES WHICH COMPRISES INCORPORATING INTO THE MOLTEN POLYAMIDE A FINELY DIVIDED 3, 4, 9, 10 PERYLENE TETRACARBOXYLIC ACID DIIMIDE.
Claim 2
Dependent Claim
24 words
A PROCESS FOR DYEING FIBER-FORMING POLYAMIDES WHICH COMPRISES INCORPORATING INTO THE MOLTEN POLYAMIDE A FINELY DIVIDED 3, 4, 9, 10 PERYLENE TETRACARBOXYLIC ACID DIIMIDE.
References Cited (Backward Citations)
US2890220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |