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US4940503B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the production of an abrasion resistant decorative thermosetting laminate

Assignee: Unilin Nordic AB
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Filing: 1989-02-17
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Granted: 1998-11-10
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Expires: 2009-02-17
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Abstract

Abstract Process for the production of a decorative thermosetting laminate with an abrasion-resistant surface layer, which laminate comprises paper sheets impregnated with a thermosetting resin. In the process a continuous paper is impregnated with a noble thermosetting resin such as melamine-formaldehyde resin. At least one side of the paper is coated with 2 - 20 g/m<2>, preferably 3 - 12 g/m<2> of small, dry and hard particles evenly distributed over the whole wet surface of the resin on the continuous paper. The resin is dried, whereupon the particle coated impregnated paper, so-called prepreg is possibly cut to sheets. At least one such sheet or continuous paper is placed as a surface layer on a base layer and bonded thereto.

Inventors

  • 👤 Kent O Lindgren
  • 👤 Sven E Danielsson
  • 👤 Tommy M Johnsson
  • 👤 Nils-Joel A Nilsson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 14:32
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/06; B32B27/00; B32B27/04; B32B21/00; B32B21/02; B32B21/04; B32B21/06; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; B44C5/0476; B32B2307/00; B32B2307/50; B32B2307/554; B32B2451/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24909

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2001-11-09 2002-05-11 2002-11-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2005-11-09 2006-05-11 2006-11-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2009-11-09 2010-05-11 2010-11-10 $7700.00 Window Closed / Lapsed

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