[12] Patent
[11] Patent No.:GC0007524  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/125715
Date of the Decision to Grant the Patent:05/Apr/2018

[21] Application No.:GC 2013-24833

[22] Filing Date:30/6/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.
FR
29/6/2012
12/56268

[72] Inventors:1- Olivier BONDIL،2- Gérard NOUAIL،3- Jean-Marc PEDEUTOUR

[73] Owner: SAINT-GOBAIN PAM, 91, Avenue de la Libération 54000 , NANCY , France

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C

  

 

  

[51]IPC:
Int. Cl.: C23C 28/00, 4/08, 4/18; F16L 58/10 (2006.01)

[56] Cited Documents:

-WO 94/19640 Al (PONT A MOUSSON [FR]; PEDEUTOUR JEAN MARC [FR] ; NOUAIL GERARD [FR] ; BEL) 1 September 1994
-EP 0 771 885 Al (DAI NIPPON TORYO KK [JP]) 7 May 1997
-JP 63 265627 A (SUMITOMO METAL IND) 2 November 1988
 
Examiner: Faisal Abdulla Aljardan

[54] OUTER COATING FOR AN IRON-BASED BURIED PIPING ELEMENT, COATED PIPING ELEMENT AND METHODS FOR DEPOSITING THE COATING
[57] Abstract: An outer coating (9) for a buried piping element (7) based on iron, notably in cast iron, the outer coating comprising a first porous layer (11) and a second porous layer (13) placed on the first layer and capable of blocking the pores of the first layer, the outer coating being characterized in that: - the first layer comprises substantially pure zinc or a zinc alloy or pseudo alloy, the alloy or pseudo alloy comprising, in proportion by mass, at least 50% of zinc, and preferably between 0.5% and 40% of aluminum, and - the second layer comprises a one component paint in an aqueous phase based on at least one emulsified synthetic resin, dispersed or dissolved in the water. A coated piping element and method for depositing the corresponding coating. Single figure.
No. of claims: 21     No. of figures: 1


 

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