US3801533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polyamide compositions
Assignee: Honeywell International Inc
•
Filing: 1972-06-08
•
Granted: 1974-04-02
•
Expires: 1992-06-08
Abstract
Abstract CERTAIN SUBSTITUTED SULFONYL IMIDE COMPOUNDS IMPART FLAME RETARDANCE WHEN BLENDED WITH POLYAMIDES.
Inventors
- 👤 M Tetenbaum
- 👤 H Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |