US2763574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for protection of cellulosic fibrous material from attack by micro-organisms
Assignee: BASF Schweiz AG
•
Filing: 1952-07-07
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Granted: 1956-09-18
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Expires: 1972-07-07
Abstract
No abstract record available.
Inventors
- 👤 Ruperti Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:12
CPC Classifications
D; D06; D06M; D06M16/00; B; B64; B64D; B64D17/00; B64D17/22; B64D17/34; B64D17/343; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2971; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172; Y10T442/20; Y10T442/2213; Y10T442/2525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR IMPARTING TO COTTON FIBROUS MATERIAL A WATER RESISTANT IMPREGNATION PROTECTING SUCH MATERIAL FROM ATTACK BY MICRO-ORGANISMS, WITHOUT SUBSTANTIAL CHANGE IN THE TENSILE STRENGTH OF THE SAID MATERIAL, BY TREATING IT WITH AN AQUEOUS IMPREGNATING LIQUID OF A MELAMINE FORMALDEHYDE CONDENSATION PRODUCT WHICH CONTAINS A HARDENING ACCELERATOR, WHICH COMPRISES AFTERIMPREGNATING THE MATERIAL AND REMOVING MECHANICALLY THE EXCESS OF IMPREGNATING LIQUID, HARDENING THE MELAMINE FORMALDEHYDE CONDENSATION PRODUCT IN AND UPON THE FIBRE INTO THE WATER-INSOLUBLE CONDITION WITH RETENTION OF AT LEAST ABOUT 45%, CALCULATED ON THE WEIGHT OF THE FIBROUS MATERIAL, OF THE WATER OF THE IMPREGNATING LIQUID UNTIL THE RESIN CONDENSATION IS COMPLETED, SO THAT THE CONDENSATION INTO THE WATER INSOLUBLE STATE IS ACTUALLY CONDUCTED IN THE PRESENCE TO WATER ORIGINATING FROM THE IMPREGNATING LIQUID.
Claim 2
Dependent Claim
127 words
A PROCESS FOR IMPARTING TO COTTON FIBROUS MATERIAL A WATER RESISTANT IMPREGNATION PROTECTING SUCH MATERIAL FROM ATTACK BY MICRO-ORGANISMS, WITHOUT SUBSTANTIAL CHANGE IN THE TENSILE STRENGTH OF THE SAID MATERIAL, BY TREATING IT WITH AN AQUEOUS IMPREGNATING LIQUID OF A MELAMINE FORMALDEHYDE CONDENSATION PRODUCT WHICH CONTAINS A HARDENING ACCELERATOR, WHICH COMPRISES AFTERIMPREGNATING THE MATERIAL AND REMOVING MECHANICALLY THE EXCESS OF IMPREGNATING LIQUID, HARDENING THE MELAMINE FORMALDEHYDE CONDENSATION PRODUCT IN AND UPON THE FIBRE INTO THE WATER-INSOLUBLE CONDITION WITH RETENTION OF AT LEAST ABOUT 45%, CALCULATED ON THE WEIGHT OF THE FIBROUS MATERIAL, OF THE WATER OF THE IMPREGNATING LIQUID UNTIL THE RESIN CONDENSATION IS COMPLETED, SO THAT THE CONDENSATION INTO THE WATER INSOLUBLE STATE IS ACTUALLY CONDUCTED IN THE PRESENCE TO WATER ORIGINATING FROM THE IMPREGNATING LIQUID.
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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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |