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US2879181A
Expired / Lapsed
US
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Process for applying stable water-repellent coating to fibrous materials and coating composition therefor
Assignee: BASF Schweiz AG
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Filing: 1956-01-06
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Granted: 1959-03-24
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Expires: 1976-01-06
Abstract
No abstract record available.
Inventors
- 👤 Aenishaenslin Rudolf
- 👤 Maeder Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/02; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
PROCESS FOR APPLYING A STABLE WATER-REPELLENT COATING TO FIBROUS MATERIALS, WHICH COMPRISES APPLYING TO SAID MATERIALS A SUBSTANTIALLY ANHYDROUS COMPOSITION WHICH CONTAINS (A) A SOLUTION IN AN ORGANIC SOLVENT WHICH IS OF AT MOST LIMITED MISCIBILITY WITH WATER OF A FLEXIBLE POLYMER OBTAINED BY THE COPOLYMERIZATION OF AT LEAST ONE ALKYL ESTER OF THE FORMULA
Claim 2
Dependent Claim
55 words
PROCESS FOR APPLYING A STABLE WATER-REPELLENT COATING TO FIBROUS MATERIALS, WHICH COMPRISES APPLYING TO SAID MATERIALS A SUBSTANTIALLY ANHYDROUS COMPOSITION WHICH CONTAINS (A) A SOLUTION IN AN ORGANIC SOLVENT WHICH IS OF AT MOST LIMITED MISCIBILITY WITH WATER OF A FLEXIBLE POLYMER OBTAINED BY THE COPOLYMERIZATION OF AT LEAST ONE ALKYL ESTER OF THE FORMULA
References Cited (Backward Citations)
GB654955A
Cited
US2751364A
Cited
US2681897A
Cited
US2719832A
Cited
US2737458A
Cited
US2727015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |