Patent US2790699A successfully refreshed from Google Patents.
US2790699A
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High speed process for desizing and bleaching cotton goods
Assignee: Imperial Chemical Industries Ltd
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Filing: 1954-01-04
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Granted: 1957-04-30
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Expires: 1974-01-04
Abstract
No abstract record available.
Inventors
- 👤 White Wilfred Arthur Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:12
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/08; D06L1/22; D06L4/00; D06L4/10; D06L4/17; D06L4/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A MULTI-STAGE PROCESS FOR THE PREPARATION OF GOODS CONTAINING COTTON FOR DYEING, PRINTING AND OTHER FINISHING PROCESSES REQUIRING A HIGHLY ABSORBENT MATERIAL WHICH COMPRISES THE STEPS OF CONTINUOUSLY PASSING THE GOODS THROUGH A SOLVENT BATH SELECTED FROM THE GROUP CONSISTING OF TRICHLOROETHYLENE AND PERCHLOROETHYLENE WHERE THEY ARE DEGREASED ADN DEWAXED, THE TOTAL NECESSARY IMMERSION TIME IN THE BATH BEING NOT MORE THAN THREE MINUTES, REMOVING SOLVENT FROM THE GOODS BY CONTACTING THEM WITH AN AQUEOUS MEDIUM HELD AT AN ELEVATED TEMPERATURE SUFFICIENT TO FLASH OFF SAID SOLVENT, PADDING THE GOODS IN AN AQUEOUS ALKALINE SOLUTION OF A PEROXYGEN COMPOUND AND THEN SUBJECTING THE GOODS TO THE ACTION OF STEAM FOR A PERIOD REQUIRING NOT MORE THAN THREE MINUTES WHEREBY THE GOODS ARE DESIZES AND BLEACHED
Claim 2
Dependent Claim
125 words
A MULTI-STAGE PROCESS FOR THE PREPARATION OF GOODS CONTAINING COTTON FOR DYEING, PRINTING AND OTHER FINISHING PROCESSES REQUIRING A HIGHLY ABSORBENT MATERIAL WHICH COMPRISES THE STEPS OF CONTINUOUSLY PASSING THE GOODS THROUGH A SOLVENT BATH SELECTED FROM THE GROUP CONSISTING OF TRICHLOROETHYLENE AND PERCHLOROETHYLENE WHERE THEY ARE DEGREASED ADN DEWAXED, THE TOTAL NECESSARY IMMERSION TIME IN THE BATH BEING NOT MORE THAN THREE MINUTES, REMOVING SOLVENT FROM THE GOODS BY CONTACTING THEM WITH AN AQUEOUS MEDIUM HELD AT AN ELEVATED TEMPERATURE SUFFICIENT TO FLASH OFF SAID SOLVENT, PADDING THE GOODS IN AN AQUEOUS ALKALINE SOLUTION OF A PEROXYGEN COMPOUND AND THEN SUBJECTING THE GOODS TO THE ACTION OF STEAM FOR A PERIOD REQUIRING NOT MORE THAN THREE MINUTES WHEREBY THE GOODS ARE DESIZES AND BLEACHED
References Cited (Backward Citations)
US1020625A
Cited
US1398378A
Cited
US1991335A
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US2173040A
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US2267718A
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US2372561A
Cited
US2549014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |