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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.:

US 11090627 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

Apr. 24, 2020

Corrosion resistant duplex steel alloy, objects made thereof, and method of making the alloy

Applicant:

Stamicarbon B.v., Sittard, NL;

Inventors:

Linn Larsson, Järbo, SE;

Daniel Gullberg, Gävle, SE;

Ulf Kivisäkk, Sandviken, SE;

Martin Östlund, Gävle, SE;

Alexander Aleida Antonius Scheerder, Sittard, NL;

Assignee:

Stamicarbon B.V., Sittard, NL;

Attorney:

Leason Ellis LLP

Primary Examiner:

Natasha E Young

Int. Cl.
CPC ...
B01J 19/00 (2006.01); B01J 19/02 (2006.01); B22F 3/15 (2006.01); C07C 27/04 (2006.01); C22C 33/02 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/40 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/58 (2006.01); F28F 21/08 (2006.01); C07C 273/04 (2006.01); C22C 38/00 (2006.01);
U.S. Cl.
CPC ...
B01J 19/02 (2013.01); B22F 3/15 (2013.01); C07C 273/04 (2013.01); C22C 33/0285 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/40 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/58 (2013.01); F28F 21/083 (2013.01); B01J 2219/0286 (2013.01);
Abstract

Disclosed is a Hot Isostatic Pressed ferritic-austenitic steel alloy, as well objects thereof. The elementary composition of the alloy comprises, in percentages by weight: the balance being Fe and unavoidable impurities. The objects can be particularly useful in making components for a urea production plant that require processing such as machining or drilling. A preferred use is in making, or replacing, liquid distributors as used in a stripper as is typically present in the high-pressure synthesis section of a urea plant.

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