US3216968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant compositions comprising organic polymers mixed with quaternary ammonium hexafluorophosphate compounds
Assignee: Individual
•
Filing: 1964-02-26
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Granted: 1965-11-09
•
Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 Stuart B Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A FLAMEPROOF COMPOSITION COMPRISING A MAJOR AMOUNT OF A THERMOPLASTIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLY(METHYLMETHACRYLATE), POLYSTYRENE, POLYETHYLENE TEREPHTHALATE, STEREOREGULAR POLYPROPYLENE, HIGH DENISITY POLYETHYLENE, AND LOW DENSITY POLYETHYLENE AND A MINOR AMOUNT OF A QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
43 words
A FLAMEPROOF COMPOSITION COMPRISING A MAJOR AMOUNT OF A THERMOPLASTIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLY(METHYLMETHACRYLATE), POLYSTYRENE, POLYETHYLENE TEREPHTHALATE, STEREOREGULAR POLYPROPYLENE, HIGH DENISITY POLYETHYLENE, AND LOW DENSITY POLYETHYLENE AND A MINOR AMOUNT OF A QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |