US3385653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile materials
Assignee: United States Department of Agriculture
•
Filing: 1967-03-29
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Granted: 1968-05-28
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Expires: 1987-03-29
Abstract
No abstract record available.
Inventors
- 👤 Robert E Whitfield
- 👤 Allen G Pittman
- 👤 William L Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
D; D06; D06M; D06M23/00; D06M13/00; D06M13/10; D06M13/184; D06M13/192; D06M13/322; D06M13/325; D06M15/00; D06M15/19; D06M15/21; D06M15/227; D06M15/263; D06M15/267; D06M15/273; D06M15/285; D06M15/37; D06M15/39; D06M15/507; D06M15/53; D06M15/564; D06M15/59; D06M15/61; D06M15/643; D06M15/6436; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T442/00; Y10T442/20; Y10T442/2033; Y10T442/2279; Y10T442/2352; Y10T442/2369; Y10T442/2385; Y10T442/2393; Y10T442/2549; Y10T442/259; Y10T442/2762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PROCESS FOR MODIFYING A FIBROUS MATERIAL WHICH COMPRISES SERIALLY IMPREGNATING A FIBROUS MATERIAL WITH TWO SOLUTIONS, ONE SOLUTION CONTAINING IN A FIRST SOLVENT A PREFORMED POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1000 AND BEARING N HIGHLY REACTIVE GROUPS, THE OTHER SOLUTION CONTAINING IN A SECOND SOLVENT A FIXATIVE BEARING M HIGHLY REACTIVE GROUPS COMPLEMENTARY TO THOSE ON SAID PRE-FORMED POLYMER, N AND M EACH HAVING A VALUE OF AT LEAST 2, THE SUM OF N AND M BEING AT LEAST 5, THE REACTIVE GROUPS OF THE POLYMER BEING REACTABLE WITH THE COMPLEMENTARY REACTIVE GROUPS OF THE FIXATIVE TO FORM LINKAGES OF THE CLASS CONSISTING OF CARBONATE, ESTER, URETHANE, AMIDE, AND UREA, THE SAID FIRST AND SECOND SOLVENTS BEING SUBSTANTIALLY MUTUALLY IMMISCIBLE, THE SAID POLYMER DIRECTLY CROSS-LINKING WITH THE FIXATIVE UNDER SAID CONDITIONS TO FORM A THREE-DIMENSIONAL POLYMER ON THE FIBROUS MATERIAL.
Claim 2
Dependent Claim
144 words
A PROCESS FOR MODIFYING A FIBROUS MATERIAL WHICH COMPRISES SERIALLY IMPREGNATING A FIBROUS MATERIAL WITH TWO SOLUTIONS, ONE SOLUTION CONTAINING IN A FIRST SOLVENT A PREFORMED POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1000 AND BEARING N HIGHLY REACTIVE GROUPS, THE OTHER SOLUTION CONTAINING IN A SECOND SOLVENT A FIXATIVE BEARING M HIGHLY REACTIVE GROUPS COMPLEMENTARY TO THOSE ON SAID PRE-FORMED POLYMER, N AND M EACH HAVING A VALUE OF AT LEAST 2, THE SUM OF N AND M BEING AT LEAST 5, THE REACTIVE GROUPS OF THE POLYMER BEING REACTABLE WITH THE COMPLEMENTARY REACTIVE GROUPS OF THE FIXATIVE TO FORM LINKAGES OF THE CLASS CONSISTING OF CARBONATE, ESTER, URETHANE, AMIDE, AND UREA, THE SAID FIRST AND SECOND SOLVENTS BEING SUBSTANTIALLY MUTUALLY IMMISCIBLE, THE SAID POLYMER DIRECTLY CROSS-LINKING WITH THE FIXATIVE UNDER SAID CONDITIONS TO FORM A THREE-DIMENSIONAL POLYMER ON THE FIBROUS MATERIAL.
References Cited (Backward Citations)
US2678287A
Cited
US3078138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |