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US3843481A Expired / Lapsed US ⏱️ 0.0 years remaining

Plastic laminate

Assignee: Kalle GmbH and Co KG
•
Filing: 1972-10-19
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Granted: 1974-10-22
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Expires: 1992-10-19
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Abstract

Abstract 1. A LAMINATE INCLUDING A POLYESTER BASE FILM HAVING ON AT LEAST ONE SIDE, A FILM-LIKE COVERING LAYER OF AN AROMATIC POLYAMIDE, POLYAMIDE-IMIDE OR POLYIMIDE AND BETWEEN THE BASE FILM AND THE COVERING LAYER AN INTERMEDIATE LAYER OF THE REACTION PRODUCT OF AT LEAST ONE AROMATIC POLYISOCYANATE WITH AT LEAST ONE EPOXIDE RESIN OF THE GENERAL FORMULA (OXIRANYL-CH2-(O-X-O-CH2-CH(-OH)-CH2)N-O-X-O-CH2-)-OXIRANE IN WHICH X IS AT LEAST ONE RADICAL OF THE FORMULAE: -(1,4-PHENYLENE)-C(-CH3)2-(1,4-PHENYLENE)- -(2,6-DI(HAL)-1,4-PHENYLENE)-C(-CH3)-(3,5-DI(HAL)-1,4- PHENYLENE)- (HAL=BR OR CL) H-(-((HO-)-PHENYLENE)-CH2)N''-, (-PHENYLENE-CH2-)2-H AND -CO-PHENYLENE-CO- N IS A NUMBER $ 10 AND N'' IS A NUMBER FROM 2 TO 8.

Inventors

  • 👤 K Hoheisel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:47
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/28; B32B27/281; B32B27/34; B32B27/36; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/046; C08J7/05; B32B2250/00; B32B2250/24; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/518; B32B2367/00; B32B2377/00; B32B2379/00; B32B2379/08; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2367/00; C08J2367/02; C08J2477/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 56 words
A LAMINATE INCLUDING A POLYESTER BASE FILM HAVING ON AT LEAST ONE SIDE, A FILM-LIKE COVERING LAYER OF AN AROMATIC POLYAMIDE, POLYAMIDE-IMIDE OR POLYIMIDE AND BETWEEN THE BASE FILM AND THE COVERING LAYER AN INTERMEDIATE LAYER OF THE REACTION PRODUCT OF AT LEAST ONE AROMATIC POLYISOCYANATE WITH AT LEAST ONE EPOXIDE RESIN OF THE GENERAL FORMULA
Claim 2
Dependent Claim 56 words
A LAMINATE INCLUDING A POLYESTER BASE FILM HAVING ON AT LEAST ONE SIDE, A FILM-LIKE COVERING LAYER OF AN AROMATIC POLYAMIDE, POLYAMIDE-IMIDE OR POLYIMIDE AND BETWEEN THE BASE FILM AND THE COVERING LAYER AN INTERMEDIATE LAYER OF THE REACTION PRODUCT OF AT LEAST ONE AROMATIC POLYISOCYANATE WITH AT LEAST ONE EPOXIDE RESIN OF THE GENERAL FORMULA

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) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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