US3583938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant fiber and process for manufacturing the same
Assignee: Mitsubishi Chemical Corp
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Filing: 1968-12-23
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Granted: 1971-06-08
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Expires: 1988-12-23
Abstract
Abstract A FLAME RETARDANT NATURAL OR SYNTHETIC FIBER CONTAINING A COMPOUND OF THE FORMULA X1-(P(=O)(-X2)-Z)N-P(=O)(-X3)-X4 WHEREIN X1, X2, X3 AND X4 REPRESENT OH, ONH4, OCONH2, OCONHCH2OH OR OR1;R, REPRESENTS HYDROCARBON RESIDUE HAVING FROM 1 TO 18 CARBON ATOMS OR SAID HYDROCARBON RESIDUE SUBSTITUTED WITH A HALOGEN OR HYDROXY RADICAL; AT LEAST ONE MEMBER AMONG X1,X2,X3 AND X4 IS OR1 AND AT LEAST ONE MEMBER AMONG THEM IS OCONH2 OR OCONHCH2OH; Z REPRESENTS O, OR2 OR OR2O; R2 REPRESENTS ALKYLENE; AND N IS AN INTEGER FROM 0 TO 20.
Inventors
- 👤 Hisao Okada
- 👤 Saburo Hiraoka
- 👤 Koji Mimura
- 👤 Yoshikatsu Ogawa
- 👤 Akihumi Nagai
- 👤 Haruhiko Hisada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1658; C07F9/08; C07F9/09; C07F9/098; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S8/00; Y10S8/04; Y10S8/21; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |