US3597390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized high temperature thermoplastics
Assignee: Helena Chemical Co
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Filing: 1968-03-18
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Granted: 1971-08-03
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Expires: 1988-03-18
Abstract
Abstract SELF-EXTINGUISHING THERMOPLASTICS STABILIZED AGAINST THERMAL DEGRADATION WITH A STABILIZING AMOUNT OF A TRIS(HALOPHENYL) PHOSPHITE, A TRIS - (HALO - ALKYLPHENYL) PHOSPHITE, A TRIS-(HALONAPHTHYL) PHOSPHITE, A TRIS-(HALO-ALKYLNAPHTHYL) PHOSPHITE, A TRIS-(HALOPHENYL) PHOSPHINE, A TRIS(HALO-ALKYLPHENYL) PHOSPHINE, A TRIS-(HALONAPHTHYL)PHOSPHINE, A TRIS-(HALO-ALKYLNAPHTYL) PHOSPHINE, A POLY (HALOPHENYLPHOSPHITE) A POLY(HALONAPHTHYLPHOSPHITE), A POLY(HALO-ALKYLPHENYLPHOSPHITE), A POLY(HALO-ALKLNAPHTHYLPHOSPHITE) AND MIXTURES THEREOF.
Inventors
- 👤 Gerald W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; C08L; C08L101/00
Claims Analysis
Total Claims: 0
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |