US2909446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of flameproofing cellulosic and proteinaceous materials and resulting product
Assignee: Solvay Solutions UK Ltd
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Filing: 1955-05-02
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Granted: 1959-10-20
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Redfarn Cyril Aubrey
- 👤 Coates Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:15
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; D01; D01F; D01F1/00; D01F1/02; D01F1/07; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H5/00; D21H5/0002; D21H13/00; D21H13/10; D21H13/28; D21H13/34; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31562; Y10T428/31591; Y10T428/31725; Y10T428/31768; Y10T428/31971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF IMPARTING FLAME-PROOF AND GLOWPROOF PROPERTIES TO MATERIALS SELECTED FROM THE GROUP CONSISTING OF CELLULOSIC AND PROTEINACEOUS MATERIALS COMPRISING TREATING SAID MATERIALS WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXYL-SUBSTITUTED POLYPHOSPHOCHLORONITRIDE, AND HYDRAZINO-SUBSTITUTED POLYPHOSPHOCHLORONITRIDE AND EFFECTING A LINKING RELATIONSHIP BETWEEN ADJACENT POLYMER CHAINS OF SAID COMPOUND ON SAID MATERIALS, A SUFFICIENT AMOUNT OF SAID COMPOUND BEING USED TO INCREASE THE WEIGHT OF SAID MATERIALS BY AT LEAST 5%, SAID COMPOUND BEING WATER-INSOLUBLE AFTER SAID LINKING RELATIONSHIP IS EFFECTED ON SAID MATERIALS.
Claim 2
Dependent Claim
85 words
THE PROCESS OF IMPARTING FLAME-PROOF AND GLOWPROOF PROPERTIES TO MATERIALS SELECTED FROM THE GROUP CONSISTING OF CELLULOSIC AND PROTEINACEOUS MATERIALS COMPRISING TREATING SAID MATERIALS WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXYL-SUBSTITUTED POLYPHOSPHOCHLORONITRIDE, AND HYDRAZINO-SUBSTITUTED POLYPHOSPHOCHLORONITRIDE AND EFFECTING A LINKING RELATIONSHIP BETWEEN ADJACENT POLYMER CHAINS OF SAID COMPOUND ON SAID MATERIALS, A SUFFICIENT AMOUNT OF SAID COMPOUND BEING USED TO INCREASE THE WEIGHT OF SAID MATERIALS BY AT LEAST 5%, SAID COMPOUND BEING WATER-INSOLUBLE AFTER SAID LINKING RELATIONSHIP IS EFFECTED ON SAID MATERIALS.
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |