Patent US6283981B1 successfully refreshed from Google Patents.
Patent EP0107615A1 successfully refreshed from Google Patents.
US2731364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving cellulose textile materials and product thereof
Assignee: BASF SE
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Filing: 1952-08-16
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Granted: 1956-01-17
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Bruno V Reibnitz
- 👤 Ruemens Wilhelm
- 👤 Beideck Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR THE PRODUCTION OF IMPREGNATIONS ON CELLULOSE TEXTILES WHICH COMPRISES IMPREGNATING THE TEXTILES WITH A SOLUTION OF A METHYLOL COMPOUND OF A 4,5DIHYDROXYIMIDAZOLIDONE IN THE PRESENCE OF AN ACID REACTING HARDENING CATALYST, DRYING AND HEATING THEN THE IMPREGNATED TEXTILES TO HARDEN THE IMPREGNATING AGENT EMPLOYED.
Claim 2
Dependent Claim
47 words
A PROCESS FOR THE PRODUCTION OF IMPREGNATIONS ON CELLULOSE TEXTILES WHICH COMPRISES IMPREGNATING THE TEXTILES WITH A SOLUTION OF A METHYLOL COMPOUND OF A 4,5DIHYDROXYIMIDAZOLIDONE IN THE PRESENCE OF AN ACID REACTING HARDENING CATALYST, DRYING AND HEATING THEN THE IMPREGNATED TEXTILES TO HARDEN THE IMPREGNATING AGENT EMPLOYED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |