Patent US3665397A successfully refreshed from Google Patents.
Patent US2869435A successfully refreshed from Google Patents.
US2869435A
Expired / Lapsed
US
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Process and product
Assignee: EIDP Inc
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Filing: 1956-01-03
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Granted: 1959-01-20
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Sands Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/1254; D21H13/00; D21H13/10; D21H17/00; D21H17/20; D21H17/21; D21H17/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS OF SUSPENDING A FIBROUS MATERIAL IN AN ESSENTIALLY AQUEOUS MEDIUM WHICH COMPRISES COATING THE SAID FIBROUS MATERIAL WITH A GELATINOUS REACTION PRODUCT OF A WATER-SOLUBLE SALT OF A LONG CHAIN ALIPHATIC SULFATE AND A WATER-SOLUBLE SALT OF A LONG CHAIN ALIPHATIC QUATERNARY AMMONIUM COMPOUND, THE SAID GELATINOUS REACTION PRODUCT BEING FORMED BY GENTLY COMBINING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF THE SAID SULFATE AND SAID QUATERNARY AMMONIUM COMPOUND IN THE PRESENCE OF WATER, AND THEREAFTER DRYING THE SAID FIBROUS MATERIAL BEARING THE SAID GELATINOUS REACTION PRODUCT AND DROPPING THE SAID DRIED, COATED FIBROUS MATERIAL UPON THE AGITATED SURFACE OF THE SAID AQUEOUS MEDIUM.
Claim 2
Dependent Claim
103 words
A PROCESS OF SUSPENDING A FIBROUS MATERIAL IN AN ESSENTIALLY AQUEOUS MEDIUM WHICH COMPRISES COATING THE SAID FIBROUS MATERIAL WITH A GELATINOUS REACTION PRODUCT OF A WATER-SOLUBLE SALT OF A LONG CHAIN ALIPHATIC SULFATE AND A WATER-SOLUBLE SALT OF A LONG CHAIN ALIPHATIC QUATERNARY AMMONIUM COMPOUND, THE SAID GELATINOUS REACTION PRODUCT BEING FORMED BY GENTLY COMBINING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF THE SAID SULFATE AND SAID QUATERNARY AMMONIUM COMPOUND IN THE PRESENCE OF WATER, AND THEREAFTER DRYING THE SAID FIBROUS MATERIAL BEARING THE SAID GELATINOUS REACTION PRODUCT AND DROPPING THE SAID DRIED, COATED FIBROUS MATERIAL UPON THE AGITATED SURFACE OF THE SAID AQUEOUS MEDIUM.
References Cited (Backward Citations)
US2328021A
Cited
US2688033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |