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:
Dec. 21, 1993
Filed:
Jul. 23, 1991
Applicant:
Inventors:
Carolyn L Ruby, Montclair, NJ (US);
Susan J Danis, Oakland, NJ (US);
Byron H Arison, Watchung, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ; C12N / ;
U.S. Cl.
CPC ...
435118 ; 435117 ; 4352535 ; 435898 ;
Abstract
Described is a new process for producing the immunosuppressant, L-683,742, a C-31 demethylated, derivative of L-683,590 (FK-520), produced under fermentation conditions utilizing the new mutant microorganism, Streptomyces hygroscopicus subsp. ascomyceticus (Merck Culture Collection MA 6646) ATCC No. 53855, being a blocked mutant of Streptomyces hygroscopicus subsp. ascomyceticus (MA 6475) ATCC No. 14891. The macrolide immunosuppressant is useful in preventing human host rejection of foreign organ transplants, e.g. bone marrow and heart transplants.