Patent US3748340A successfully refreshed from Google Patents.
US3748340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis-imides of polyhalo substituted polyhydropolycyclicdicarboxylic acids
Assignee: Universal Oil Products Co
•
Filing: 1968-09-05
•
Granted: 1973-07-24
•
Expires: 1988-09-05
Abstract
Abstract A MOVEL COMPOSITION OF MATTER OF THE FORMULA: (1,3-DI(O=),5,6,7,8-TETRA(X-),5,8-(-(C(-X)2)M-),4,9- (-(C(-Y)2)N-)PERHYDROBENZ(F)ISOINDOL-2-YL)2-R IN WHICH X AND Y ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HALOGEN RADICALS, AT LEAST TWO X''S BEING HALOGEN; R IS SELECTED FROM THE GROUP CONSISTING OF C2-C4 ALKYLENE, PHENYLENE, CYCLOHEXYLENE, -(CH2)2NH(CH2)2NH8CH2)2- AND -(CH2)2-NH-(CH2)2-NH-(CH2)2-, AND -(1,4-PHENYLENE)-Z- (1,4-PHENYLENE)- WHEREIN Z IS OXYGEN, SULFUR OR AMINO; M IS 1 OR 2; AND N IS 1 OR 2. THE NOVEL COMPOSITIONS OF MATTER ARE USEFUL AS ADDITIVES FOR PLASTIC, POLYMERS, ETC. WHEREBY FLAMEPROOF OR FIRE-RETARDANT PROPERTIES ARE ADDED THERETO.
Inventors
- 👤 C Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:44
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/70; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |