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:
May. 25, 1993
Filed:
May. 29, 1991
Takeda Chemical Industries, Ltd., Osaka, JP;
Abstract
Disclosed are (1) a hybridoma carrying a vector for expressing a fibroblast growth factor (FGF) protein gene; (2) a method for producing the hybridoma of (1) which comprises transforming a hybridoma with the vector for expressing the FGF protein gene; and (3) a method for producing a biologically active substance which comprises cultivating in a culture medium the hybridoma obtained by the method of (2) using a hybridoma producing a biologically active substance other than the FGF protein, producing the FGF protein and producing and accumulating the biologically active substance in a culture, and recovering the biologically active substance, whereby the biologically active substance can be efficiently produced and recovered using the serum-free medium, which is advantageous for industrial production and very useful for an improvement in the breeding of the hybridoma.