US3900644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant laminate
Assignee: United Merchants and Manuf Inc
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Filing: 1973-03-20
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Granted: 1975-08-19
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Expires: 1993-03-20
Abstract
Abstract A heat resistant laminate suitable for kitchen countertop surfaces which comprises a top layer of a flexible, transparent polymeric sheet having a high heat resistance, a second layer of a flexible, hard surfaced material, a third layer of a flexible metal foil heat sink, a fourth layer of a pressure sensitive adhesive and a bottom layer of a sheet of release material.
Inventors
- 👤 Martin M Sackoff
- 👤 Gregory F Pulaski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B15/00; B32B15/04; B32B15/12; B32B15/14; B32B15/20; B32B27/06; B32B27/10; B32B27/36; B32B5/00; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/06; B32B7/12; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; B44F; B44F9/00; B44F9/02; B44F9/04; C; C08; C08J; C08J7/00; C08J7/02; C09; C09J; C09J7/00; C09J7/20; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/40; B32B2307/412; B32B2307/70; B32B2307/748; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2311/00; B32B2311/12; B32B2311/16; B32B2311/24; B32B2317/00; B32B2317/12; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1438; Y10T428/1443; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
A FLEXIBLE HEAT RESISTANT LAMINATE COMPRISING A SERIES OF LAYERS BONDED TOGETHER, SAID LAYERS CONSISTING ESSENTIALLY OF A TOP LAYER OF A TRANSPARENT POLYESTER FILM HAVING A HIGH SOFTENING POINT, A SECOND LAYER OF A HARD SURFACED, FLEXIBLE NONWOVEN, FIBROUS STRENGTHENING AND INDENTATION RESISTANT MATERIAL, A THIRD LAYER OF A FLEXIBLE METAL FOIL HEAT SINK, A FORTH LAYER OF A PRESSURE-SENSITIVE ADHESIVE, AND A BOTTON LAYER OF A RELEASE SHEET.
Claim 2
Dependent Claim
70 words
A FLEXIBLE HEAT RESISTANT LAMINATE COMPRISING A SERIES OF LAYERS BONDED TOGETHER, SAID LAYERS CONSISTING ESSENTIALLY OF A TOP LAYER OF A TRANSPARENT POLYESTER FILM HAVING A HIGH SOFTENING POINT, A SECOND LAYER OF A HARD SURFACED, FLEXIBLE NONWOVEN, FIBROUS STRENGTHENING AND INDENTATION RESISTANT MATERIAL, A THIRD LAYER OF A FLEXIBLE METAL FOIL HEAT SINK, A FORTH LAYER OF A PRESSURE-SENSITIVE ADHESIVE, AND A BOTTON LAYER OF A RELEASE SHEET.
Claim 3
Dependent Claim
15 words
The laminate of claim 1 wherein the second layer is a hard calendered paper sheet.
Claim 4
Dependent Claim
23 words
The laminate of claim 1 wherein the third layer is a metal foil selected from the group consisting of copper, tin and aluminum.
Claim 5
Dependent Claim
17 words
The laminate of claim 1 wherein the release sheet is a paper coated with a release material.
Claim 6
Dependent Claim
41 words
The laminate of claim 1 wherein the laminate has an overall thickness of about 5.0 - 20.0 mils, and is sufficiently flexible that it neither breaks nor cracks when it is rolled into a 2 inch diameter cylinder and creased 180*.
Claim 7
Dependent Claim
34 words
The laminate of claim 1 wherein the polyester top layer has a thickness in the range from about 0.01 to 50 mils and wherein the foil has a thickness greater than about 0.75 mils.
Claim 8
Dependent Claim
14 words
The laminate of claim 2 wherein the surface of the paper layer is decorated.
Claim 9
Dependent Claim
28 words
The laminate of claim 7 wherein the surface of the paper layer is decorated with a mixture of a cross-linking, thermosetting urea-formaldehyde alkyd containing vehicle and a pigment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |