US3398035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermolamination of plastic sheet to foam substrates
Assignee: Dow Chemical Co
•
Filing: 1962-11-05
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Granted: 1968-08-20
•
Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Cleereman
- 👤 Donald J Dirkse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/569; B29C44/3415; B29C44/3419; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD FOR LAMINATING A SHEET OF THERMOPLASTIC FILM TO A COMPATIBLE SUBSTANTIALLY UNHEATED TEMPERATURE FRAIL PLASTIC FOAM SUBSTRATE, SAID METHOD COMPRISING THE STEPS OF FEEDING SAID SHEET AND SUBSTRATE TOGETHER, AND SIMULTANEOUSLY COOLING BOTH SIDES OF SAID SHEET AND SUBSTRATE SIMULTANEOUSLY WITH SAID PRESSING TO FORM A LAMINATE SUBSTANTIALLY FREE OF DISTORTION.
Claim 2
Independent Claim
53 words
A METHOD FOR LAMINATING A SHEET OF THERMOPLASTIC FILM TO A COMPATIBLE SUBSTANTIALLY UNHEATED TEMPERATURE FRAIL PLASTIC FOAM SUBSTRATE, SAID METHOD COMPRISING THE STEPS OF FEEDING SAID SHEET AND SUBSTRATE TOGETHER, AND SIMULTANEOUSLY COOLING BOTH SIDES OF SAID SHEET AND SUBSTRATE SIMULTANEOUSLY WITH SAID PRESSING TO FORM A LAMINATE SUBSTANTIALLY FREE OF DISTORTION.
References Cited (Backward Citations)
US2072105A
Cited
US2308638A
Cited
US2690206A
Cited
US2853411A
Cited
US3186895A
Cited
US2983962A
Cited
US3159698A
Cited
US3234065A
Cited
US3196062A
Cited
US3222237A
Cited
US3127304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |