US3741854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a cellular urethane backed tufted rug
Assignee: General Latex and Chemical Corp
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Filing: 1970-11-10
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Granted: 1973-06-26
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Expires: 1990-11-10
Abstract
Abstract THE INVENTION COMPRISES A METHOD OF PREPARING A CELLULAR URETHANE LAMINATED BY BONDING A CELLULAR POLYURTHHANE SHEET MATERIAL TO A BACKING SHEET MATERIAL, FOR EXAMPLE OF NATURAL OR SYNTHETIC FIBERS WITH A FOAMABLE CARBOXYLATED LATEX CONTAINING PENDANT CARBOXYLIC AND SULFONIC ACID GROUPS AND AN AMINO COMPOUND. THE LAMINATED IS HEATED TO A TEMPERATURE SUFFICIENT TO CURE THE CARBOXYLATED LATEX AND COLLAPSE THE FOAMED CARBOXYLATED LTEX.
Inventors
- 👤 Gioia F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:26
CPC Classifications
D; D05; D05C; D05C17/00; D05C17/02; D05C17/023; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/249921; Y10T428/249953; Y10T428/249975; Y10T428/249982; Y10T428/249985; Y10T428/31504; Y10T428/31855
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |