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:
Apr. 24, 1984
Filed:
Dec. 20, 1982
Applicant:
Inventors:
Keizo Konoki, Tokyo, JP;
Takanobu Shinohara, Chiba, JP;
Ikuyoshi Kochi, Chiba, JP;
Toshio Anzai, Mobara, JP;
Hisakatsu Nishihara, Hirakata, JP;
Junichi Sugitani, Hirakata, JP;
Koji Tsuchida, Hirakata, JP;
Assignees:
Kubota Ltd, Osaka, JP;
Toyo Engineering Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
422310 ; 7512 / ; 7512 / ; 7512 / ; 138141 ; 208 / ; 422241 ; 422312 ; 585636 ;
Abstract
A reactor tube for thermally cracking or reforming of hydrocarbons wherein a reacting layer contacting hydrocarbons is made of heat resisting steel comprising, in terms of % by weight, 0.3 to 1.5% C, up to 3% Si, 6 to 15% Mn, 20 to 30% Cr, up to 3% Nb, up to 0.15% N, the balance being substantially Fe and a covering layer which covers the said reacting layer is made of Fe-Cr-Ni heat resisting steel and is fused to the reacting layer at their boundary.