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:
Sep. 22, 1998
Filed:
Feb. 07, 1995
Applicant:
Inventors:
Wolfgang A Renner, CH-3286 Muntelier, CH;
Hans M Eppenberger, CH-8116 Wurenlos, CH;
James E Bailey, CH-8001 Zurich, CH;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ;
U.S. Cl.
CPC ...
435325 ; 435358 ; 435375 ;
Abstract
Cell cultures are described which proliferate in a serum- and protein-free environment and which are characterized by the circumstance that the concentration of at least one cell-cycle-regulatory protein is increased during at least one period of the cell-cycle. Methods for the production of such cell cultures are presented. With these methods cell lines can be transferred to serum- and protein-free growth that are already in use in a production process which, prior to the use of these methods, requires serum or proteins added to the basal medium.