US2786733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating abaca cordage fiber with the hydrolysis product of methacrylato chromic chloride and product produced thereby
Assignee: FABRIC RES LAB Inc
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Filing: 1953-09-10
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Granted: 1957-03-26
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Expires: 1973-09-10
Abstract
No abstract record available.
Inventors
- 👤 Thomson George
- 👤 Chapin A Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:48
CPC Classifications
D; D01; D01C; D01C1/00; D01C1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF PRODUCING CORDAGE FIBER OF HIGH ELONGATION FROM ABACA'' FIBER WHICH COMPRISES IMMERSING SAID ABACA'' FIBER IN A 10-15% AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE FOR ABOUT 5-30 MINUTES AT A TEMPERATURE OF ABOUT 0-30*C., DRAINING SAID FIBER, NEUTRALIZING RESIDUAL ALKALI AND WASHING SIAD FIBER WITH WATER, DRYING SAID FIBER, IMMERSING SAID FIBER IN A 0.25-1% WATER SOLUTION OF METHACRYLATO CHROMIC CHLORIDE OF PH ABOUT 3-5 AT ROOM TEMPERATURE FOR ABOUT 1/2-20 HOURS, DRAINING SAID FIBER AND DRYING IT, AND HEATING THE THUS-TREATED FIBER AT ABOUT 300-350*F. FOR A TIME IN THE NEIGHBORHOOD OF 20 MINUTES.
Claim 2
Independent Claim
108 words
THE METHOD OF PRODUCING CORDAGE FIBER OF HIGH ELONGATION FROM ABACA'' FIBER WHICH COMPRISES IMMERSING SAID ABACA'' FIBER IN A 10-15% AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE FOR ABOUT 5-30 MINUTES AT A TEMPERATURE OF ABOUT 0-30*C., DRAINING SAID FIBER, NEUTRALIZING RESIDUAL ALKALI AND WASHING SIAD FIBER WITH WATER, DRYING SAID FIBER, IMMERSING SAID FIBER IN A 0.25-1% WATER SOLUTION OF METHACRYLATO CHROMIC CHLORIDE OF PH ABOUT 3-5 AT ROOM TEMPERATURE FOR ABOUT 1/2-20 HOURS, DRAINING SAID FIBER AND DRYING IT, AND HEATING THE THUS-TREATED FIBER AT ABOUT 300-350*F. FOR A TIME IN THE NEIGHBORHOOD OF 20 MINUTES.
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) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |