US3700403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for flameproofing cellulose-containing fibrous materials
Assignee: Novartis AG
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Filing: 1971-01-12
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Granted: 1972-10-24
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Expires: 1991-01-12
Abstract
Abstract THE PRESENT INVENTION RELATES TO A PROCESS FOR RENDERING CELLULOSE-CONTAINING FIBROUS MATERIALS FLAMEPROOF, WHICH COMPRISES APPLYING TO SAID MATERIALS AN AQUEOUS PREPARATION CONTAINING PHOSPHORUS-CONTAINING N,N-DIMETHYLOLCARBOXYLIC ACID AMIDES. THE FLAMEPROOF FINISH IS RESISTANT TO WASHING AND DRY-CLEANING AND IMPROVES THE DRY CREASE ANGLE AND THE WET CREASE ANGLE OF THE FINISHED MATERIAL.
Inventors
- 👤 Hermann Nachbur
- 👤 Arthur Maeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S8/00; Y10S8/04; Y10S8/21
Claims Analysis
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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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |