The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 1990
Filed:
May. 18, 1988
Applicant:
Inventors:
Gert Kossatz, Braunschweig, DE;
Wolfgang Heine, Osterode/Harz, DE;
Karsten Lempfer, Braunschweig, DE;
Heinz Sattler, Braunschweig, DE;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28B / ; E04B / ; E04C / ;
U.S. Cl.
CPC ...
264256 ; 52600 ; 264D / ;
Abstract
A process for manufacturing a multilayer building panel in which one layer s a main layer comprising a binder and a reinforcing additive, and another layer contains a binder and a reinforcement such as a mat includes depositing the various layers such that one layer is deposited with an excess of water for hardening, and another with a deficiency, so that the water is caused to migrate between layers and creates a transition layer providing a gradual and continuous transition in composition between the layers.