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:
Jun. 22, 1976
Filed:
Aug. 19, 1974
Koji Sakasegawa, Fukuyama, JA;
Atsushi Ohsumi, Fukuyama, JA;
Tatsue Saito, Fukuyama, JA;
Yukio Hosaka, Fukuyama, JA;
Kazuo Kunioka, Yokohama, JA;
Tomio Yamamoto, Takamatsu, JA;
Tadashi Asai, Kobe, JA;
Nippon Kokan Kabushiki Kaisha, Tokyo, JA;
Fuji Toyuki Kabushiki Kaisha, Kagawa, JA;
Asai Yushi Kogyo Kabushiki Kaisha, Kobe, JA;
Abstract
In heating a material radiant at high temperatures, such as a steel product, in a heating furnace, the said material is charged into the heating furnace to heat. A discrimination mark is previously drawn on the surface of material to be discriminated on a portion readily watched from outside the furnace. A heat resisting paint sensitive to near ultraviolet rays is used to make the mark. The said material radiant-heated in the heating furnace is discriminated from outside the furnace as being radiant by applying near ultraviolet rays of a high pressure mercury lamp thereto from outside the furnace to provide a sharp contrast between the said material surface and the said discrimination mark for the discrimination of the said mark from outside the furnace.