US2983623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame proofing agents derived from methylol phosphorus polymers
Assignee: Solvay Solutions UK Ltd
•
Filing: 1959-12-01
•
Granted: 1961-05-09
•
Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Coates Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:17
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; B; B27; B27K; B27K3/00; B27K3/02; B27K3/0278; B27K3/52; C; C08; C08G; C08G79/00; C08G79/02; C08G79/06; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; D06M15/415; D06M15/423; D06M15/43; D06M15/431; D06M15/667; D06M15/673; D21H25/00; D21H25/02; D21H5/00; D21H5/0002; B27K2200/00; B27K2200/10; B27K3/15; B27K3/16; B27K3/20; B27K5/00; B27K5/04; 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
57 words
PROCESS FOR IMPROVING THE PROPERTIES OF A CELLULOSE MATERIAL, CONSISTING ESSENTIALLY IN INCORPORATING IN SAID MATERIAL A FURTHER-POLYMERIZABLE METHYLOL-PHOSPHORUS POLYMERIC MATERIAL, CONTAINING AT LEAST ONE FREE METHYLOL GROUP ATTACHED TO A PHOSPHORUS ATOM, AND THEN EXPOSING THE MATERIAL IN THE DRY STATE TO THE ACTION OF GASEOUS AMMONIA FOLLOWED BY SUBJECTING IT TO AN AQUEOUS AMMONIA TREATMENT.
Claim 2
Dependent Claim
57 words
PROCESS FOR IMPROVING THE PROPERTIES OF A CELLULOSE MATERIAL, CONSISTING ESSENTIALLY IN INCORPORATING IN SAID MATERIAL A FURTHER-POLYMERIZABLE METHYLOL-PHOSPHORUS POLYMERIC MATERIAL, CONTAINING AT LEAST ONE FREE METHYLOL GROUP ATTACHED TO A PHOSPHORUS ATOM, AND THEN EXPOSING THE MATERIAL IN THE DRY STATE TO THE ACTION OF GASEOUS AMMONIA FOLLOWED BY SUBJECTING IT TO AN AQUEOUS AMMONIA TREATMENT.
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |