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. 07, 1987
Filed:
Apr. 12, 1985
Applicant:
Inventor:
Gordon M Ringold, Palo Alto, CA (US);
Assignee:
Board of Trustees of Leland Stanford Jr. University, Stanford, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ; C12P / ; C12N / ; C12N / ; C12N / ; C07H / ;
U.S. Cl.
CPC ...
435 91 ; 435 68 ; 435 70 ; 4351723 ; 435240 ; 435317 ; 536 27 ; 935 16 ; 935 34 ; 935 36 ; 935 52 ; 935 70 ; 935 71 ; 935 79 ; 935 82 ;
Abstract
Method and compositions are provided for gene amplification. A DNA unit is prepared capable of replication in a eukaryotic host having tandem genes, where the first gene is capable of complementing an auxotrophic host. The auxotrophic host is transformed with the DNA unit under selective conditions requiring enhanced expression of the first gene. Hosts are then selected for amplification of the first and second genes.