US3668302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant textile covered wire
Assignee: AT&T Inc
•
Filing: 1968-07-25
•
Granted: 1972-06-06
•
Expires: 1988-07-25
Abstract
Abstract A textile served wire coated with a flame retardant lacquer comprised essentially of a mixture, by weight, of 100 parts cellulose acetate base, 35 parts tricresyl phosphate plasticizer, 42.5 parts tris (2, 3 - dibromopropyl) phosphate flame retardant, and 128.5 parts acetone solvent.
Inventors
- 👤 Daniel Edmund Boland
- 👤 Leonard S Dewees
- 👤 Leroy M Towsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
The wire of claim 1 wherein said base is cellulose acetate.
Claim 2
Dependent Claim
11 words
The wire of claim 2 wherein said solvent is dimethyl ketone.
Claim 3
Dependent Claim
43 words
The wire of claim 3 wherein said base, plasticizer, flame retardant and solvent are present prior to drying in the following proportions: 100 parts cellulose acetate, 35 parts tricresyl phosphate, 42.5 parts tris (2, 3 - dibromopropyl) phosphate, and 128.5 parts dimethyl ketone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |