Patent US3379937A successfully refreshed from Google Patents.
Patent US2806804A successfully refreshed from Google Patents.
US2806804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating wool
Assignee: EF Drew and Co Inc
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Filing: 1952-12-29
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Granted: 1957-09-17
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Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Lloyd W Davis
- 👤 John P Redston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:02
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/52; D06M13/522; D06M13/10; D06M13/184; D06M13/188; D06M7/00; C; C10; C10M; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10N; C10N2040/00; C10N2040/46; D06M2200/00; D06M2200/40; Y; Y10; Y10S; Y10S8/00; Y10S8/93
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
A METHOD WHICH COMPRISES TREATING WOOL FIBERS BY IMPREGNATING SAID FIBERS WITH A MIXTURE WHICH IS SUBSTANTIALLY FREE FROM SOAPS AND WHICH CONSISTS OF AN AQUEOUS EMULSION OF ABOUT 10-20 PARTS OF POLYETHYLENE GLYCOL 325-825 MONOESTER OF A FATTY ACID HAVING 12-22 CARBON ATOMS, ABOUT 5-10 PARTS OF THE LIQUID GLYCERYL TRIESTER OF FATTY ACIDS HAVING 12-18 CARBON ATOMS AND IN WHICH SOME OF SAID ACIDS ARE UNSATURATED, ABOUT 5-10 PARTS OF THE CONDENSATION PRODUCT IN MOL TO MOL RATIO OF AN ETHANOLAMINE WITH FATTY ACIDS OF ANIMAL AND VEGETABLE OILS, AND ABOUT 65-75 PARTS OF A PARAFIN OIL, AND THEREAFTER TREATING SAID FIBERS BY CONTACT EITH AN ALKOXY POLYETHYLENE GLYCOL 325-850 MONOESTER OF A FATTY ACID HAVING 12-22 CARBON ATOMS IN WHICH THE ALOXY RADICAL HAS 1-2 CARBON ATOMS.
Claim 2
Independent Claim
130 words
A METHOD WHICH COMPRISES TREATING WOOL FIBERS BY IMPREGNATING SAID FIBERS WITH A MIXTURE WHICH IS SUBSTANTIALLY FREE FROM SOAPS AND WHICH CONSISTS OF AN AQUEOUS EMULSION OF ABOUT 10-20 PARTS OF POLYETHYLENE GLYCOL 325-825 MONOESTER OF A FATTY ACID HAVING 12-22 CARBON ATOMS, ABOUT 5-10 PARTS OF THE LIQUID GLYCERYL TRIESTER OF FATTY ACIDS HAVING 12-18 CARBON ATOMS AND IN WHICH SOME OF SAID ACIDS ARE UNSATURATED, ABOUT 5-10 PARTS OF THE CONDENSATION PRODUCT IN MOL TO MOL RATIO OF AN ETHANOLAMINE WITH FATTY ACIDS OF ANIMAL AND VEGETABLE OILS, AND ABOUT 65-75 PARTS OF A PARAFIN OIL, AND THEREAFTER TREATING SAID FIBERS BY CONTACT EITH AN ALKOXY POLYETHYLENE GLYCOL 325-850 MONOESTER OF A FATTY ACID HAVING 12-22 CARBON ATOMS IN WHICH THE ALOXY RADICAL HAS 1-2 CARBON ATOMS.
Claim 3
Dependent Claim
25 words
THE METHOD OF CLAIM 1 IN WHICH THE WOOL SUBJECTED TO CARBONIZATION OF CELLULOSE PRESENT THEREIN AT A POINT IN THE PROCESS BETWEEN SAID TREATMENTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |