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:
Feb. 25, 1982
Keizo Konoki, Tokyo, JP;
Takanobu Shinohara, Chiba, JP;
Ikuyoshi Kochi, Chiba, JP;
Keiichi Shibata, Mobara, JP;
Hisakatsu Nishihara, Hirakata, JP;
Toshiaki Morichika, Hirakata, JP;
Junichi Sugitani, Hirakata, JP;
Koji Tsuchida, Hirakata, JP;
Kubota Ltd., Osaka, JP;
Toyo Engineering Corporation, Tokyo, JP;
Abstract
A reactor tube for thermally cracking or reforming hydrocarbons comprising an outer tube member made of Ni-containing heat resisting material and having enhanced mechanical strength with a large wall thickness, and an inner tube member of small wall thickness fitted in the outer tube member and made of heat resisting material free from Ni or with a low Ni content. The inner and outer tube members have been subjected to a diffusion treatment with a thin coating of Ni-P solid solution provided at the junction therebetween and thereby bonded together.