US3780141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked vinyl halide polymers as flame retardant additives for thermoplastics
Assignee: Stauffer Chemical Co
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Filing: 1971-01-21
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Granted: 1973-12-18
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Expires: 1991-01-21
Abstract
Abstract THERE ARE DISCLOSED FIRE RETARDANT POLYBLENDS COMPRISING THERMOPLASTIC POLYMERS INTIMATELY ADMIXED WITH A CROSSLINKED COPOLYMER OF A VINYL HALIDE, PREFERABLY A CROSSLINKED VINYL CHLORIDE COPOLYMER. THESE FIRE RETARDANT POLYBLENDS MAY BE UTILIZED IN A VARIETY OF COATING, IMPREGNATING AND ESPECIALLY MOLDING APPLICATIONS WHEREIN IT IS DESIRED TO PROVIDE FIRE RETARDANCY TO THE RESULTING END PRODUCT.
Inventors
- 👤 J Jin
- 👤 P Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:32
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0066; C08L101/00; C08L23/10; C08L27/00; C08L27/02; C08L27/04; C08L27/06; Y; Y10; Y10S; Y10S260/00; Y10S260/24
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |