US3590100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing and applying textile finishes and finishes produced by such methods
Assignee: Sandoz Inc
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Filing: 1967-01-24
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Granted: 1971-06-29
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Expires: 1987-01-24
Abstract
Abstract THE PROCESS OF PRODUCING CARBAMATE FINISHES BY REACTING AMONOCARBAMATE WITH FORMALDEHYDE IS CONTINUED BY REACTING FREE EXCESS FORMALDEHYDE LEFT AFTER THE REACTION WITH ETHYLENE UREA, PROPYLENE UREA OR GLYOXAL AND UREA TO SUBSTANTIALLY REDUCE THE FREE FORMALDEHYDE AND DIMINISH THE VOLATILITY OF THE FINISH.
Inventors
- 👤 Herman G Weiland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:45
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C07D239/08; C07D239/10; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; C07D233/40; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2393; Y10T442/2549; Y10T442/2574
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |