Patents by Inventor LeRoy E. Johnson

LeRoy E. Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Paulomycin A and B and preparation thereof
    Patent number: 4335108
    Abstract: Disclosed and claimed is an improved fermentation process for preparing the known antibiotic U-43,120, herein referred to as paulomycin. Also disclosed and claimed are the novel and useful antibiotics paulomycin A and paulomycin B.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: June 15, 1982
    Assignee: The Upjohn Company
    Inventors: Alexander D. Argoudelis, Vincent P. Marshall, Leroy E. Johnson
  • Composition of matter and process
    Patent number: 4306021
    Abstract: Novel antibiotic U-60, 394 producible in a fermentation under controlled conditions using a biologically pure culture of the microorganism Streptomyces woolenses, Dietz and Li sp.n., NRRL 12113. This antibiotic is strongly active against various Gram-positive bacteria, for example, Staphylococcus aureus and Streptococcus hemolyticus. It is also strongly active against the Gram-negative bacterium Streptococcus pneumoniae. Thus, antibiotic U-60, 394 can be used in various environments to eradicate or control such bacteria.
    Type: Grant
    Filed: April 10, 1980
    Date of Patent: December 15, 1981
    Assignee: The Upjohn Company
    Inventors: Lester A. Dolak, LeRoy E. Johnson
  • Process for recovering antibiotics U-50,147 and U-51,738
    Patent number: 4091201
    Abstract: Microbiological process for preparing the known antibiotics, antibiotic A-396-1 and L-dihydrophenylalanine, by use of the new microorganism Streptomyces lemensis, NRRL 8170 using controlled fermentation conditions. These antibiotics are active against Gram-positive and Gram-negative bacteria. Accordingly, they can be used in various environments to eradicate or control such bacteria.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: May 23, 1978
    Assignee: The Upjohn Company
    Inventors: Alexander D. Argoudelis, LeRoy E. Johnson
  • Process for producing antibiotics U-50,147 and U-51,738
    Patent number: 4029548
    Abstract: Microbiological process for preparing the known antibiotics, antibiotic A-396-1 also known as U-50,147 and L-dihydrophenylalanine also known as U-51,748, by use of the new microorganism Streptomyces lemensis, NRRL 8170 using controlled fermentation conditions. These antibiotics are active against Gram-positive and Gram-negative bacteria. Accordingly, they can be used in various environments to eradicate or control such bacteria.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: June 14, 1977
    Assignee: The Upjohn Company
    Inventors: Alexander D. Argoudelis, LeRoy E. Johnson
  • Seeder with seed flow modification for marking seeded fields
    Patent number: 4023707
    Abstract: A grain drill having a plurality of closely spaced seeding units is modified to change the pattern of seed flow through one of the seeding units so that when the plants emerge, the one row will be visibly different from the other rows. The visibly different row can then be used as a marker for weed control spraying or the like.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: May 17, 1977
    Inventor: LeRoy E. Johnson
  • Grain field marker
    Patent number: 3949686
    Abstract: A grain drill having a plurality of closely spaced seeding units is modified to change the pattern of seed flow through one of the seeding units cyclically within the length of a row, so that when the plants emerge, the one row will be visibly different from the other rows. The visibly different row can then be used as a marker for weed control spraying or the like.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: April 13, 1976
    Inventor: LeRoy E. Johnson