US3012908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of phosphorus compounds and their use in fireproofing
Assignee: Compagnie Francaise des Matieres Colorantes SARL
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Filing: 1960-02-12
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Granted: 1961-12-12
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Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 Bilger Xavier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/062; C07F9/065; C07F9/067; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
FIBROUS CELLULOSIC MATERIALS FIREPROOFED BY MEANS OF A PHOSPHORUS COMPOUND PREPARED BY REACTING AN INTERMEDIATE PHOSPHORUS COMPOUND OF THE GENERAL FORMULA PNNN-1CL2N+3 IN WHICH N IS AN INTEGER GREATER THAN 1 WITH METHYL ALCOHOL AND THEN WITH ANHYDROUS AMMONIA THE RATIO OF GRAM MOLECULES OF AMMONIA TO GRAM ATOMS OF PHOSPHORUS BEING BETWEEN 1 AND 4.
Claim 2
Dependent Claim
56 words
FIBROUS CELLULOSIC MATERIALS FIREPROOFED BY MEANS OF A PHOSPHORUS COMPOUND PREPARED BY REACTING AN INTERMEDIATE PHOSPHORUS COMPOUND OF THE GENERAL FORMULA PNNN-1CL2N+3 IN WHICH N IS AN INTEGER GREATER THAN 1 WITH METHYL ALCOHOL AND THEN WITH ANHYDROUS AMMONIA THE RATIO OF GRAM MOLECULES OF AMMONIA TO GRAM ATOMS OF PHOSPHORUS BEING BETWEEN 1 AND 4.
References Cited (Backward Citations)
US2909446A
Cited
FR1157097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |