US2827357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous dyeing of vegetable fibres
Assignee: —
•
Filing: —
•
Granted: 1958-03-18
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Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:24
CPC Classifications
D; D06; D06B; D06B1/00; D06B1/04; D06B1/06; D06P; D06P1/00; D06P1/0032; D06P1/22; D06P1/34; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/91; Y10S8/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS OF MOLTEN METAL BATH DYEING OF VEGETABLE FIBROUS MATERIAL WITH VAT DYES, COMPRISING CONTINUOUSLY PASSING THE FIBROUS MATERIAL THROUGH HOT AQUEOUS DYE LIQUOR CONTAINING A VAT DYE AND AN ALKALI METAL HYDROSULFITE FLOATING ON THE SURFACE OF SAID BATH, SAID AQUEOUS DYE LIQUOR CONTAINING ABOUT 120 TO 400 GRAMS PER LITER OF CAUSTIC ALKALI.
Claim 2
Dependent Claim
56 words
A PROCESS OF MOLTEN METAL BATH DYEING OF VEGETABLE FIBROUS MATERIAL WITH VAT DYES, COMPRISING CONTINUOUSLY PASSING THE FIBROUS MATERIAL THROUGH HOT AQUEOUS DYE LIQUOR CONTAINING A VAT DYE AND AN ALKALI METAL HYDROSULFITE FLOATING ON THE SURFACE OF SAID BATH, SAID AQUEOUS DYE LIQUOR CONTAINING ABOUT 120 TO 400 GRAMS PER LITER OF CAUSTIC ALKALI.
References Cited (Backward Citations)
DE99337C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |