US3706622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adhering urethane foams
Assignee: Butler Manufacturing Co
•
Filing: 1970-01-22
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Granted: 1972-12-19
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Expires: 1990-01-22
Abstract
Abstract A method of adhering rigid urethane foam to itself and to various substrates, such as paper and metal, by means of carefully controlling heat and pressure. The polyurethane foams capable of adhesion are those which allow a post cure at elevated temperature subsequent to their original formation.
Inventors
- 👤 Donald J Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/121; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G2110/00; C08G2110/0025; C08G2170/00; C08G2170/60; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/19; Y10T428/192; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
The process of claim 1 wherein the pressure applied is 0.1 psi.
Claim 2
Dependent Claim
22 words
The process of claim 1 wherein the substrates are selected from the group consisting of polyurethane foam, paper, metal and coated paper.
References Cited (Backward Citations)
GB824668A
Cited
US3062698A
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US2957793A
Cited
US2994110A
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US3205120A
Cited
US3362862A
Cited
US3497416A
Cited
US3463698A
Cited
US3547753A
Cited
US3563845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |