Patents by Inventor Louis Chaiet

Louis Chaiet 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).

  • Peptide derivatives of .beta.-chloro-L(Z)-dehydro-glutamic acid
    Patent number: 5041644
    Abstract: New peptide derivatives .beta.-chloro-L-(Z)-dehydroglutamic acid are described which display antibacterial activity.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: August 20, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Yoshiharu Morita, Ryoichi Ando, Junko Takashima, Louis Chaiet
  • Antifungal fermentation product
    Patent number: 5008187
    Abstract: A new antifungal agent which exhibits a moderately broad spectrum of activity towards filamentous fungi and also against Cryptococcus species of the yeast fungi, and which has been isolated from a solid stationary fermentation of an unidentified species of Fusarium is described.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: April 16, 1991
    Assignee: Merck & Co., Inc.
    Inventors: Louis Chaiet, Sheldon B. Zimmerman, Richard L. Monaghan, George M. Garrity
  • R-(Z)-4-amino-3-chloro-2-pentenedioic acid, novel antibacterial agent
    Patent number: 4670466
    Abstract: R-(Z)-4-amino-3-chloro-2-pentenedioic acid is a novel antibacterial and isolated from Streptomyces viridogenes MA5450, ATCC 39387.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: June 2, 1987
    Assignee: Merck & Co., Inc.
    Inventors: Louis Chaiet, Sheldon B. Zimmerman, Richard L. Monaghan, Maria I. Martin
  • R-(Z)-4-amino-3-chloro-2-pentenedioic acid, novel antibacterial agent
    Patent number: 4600691
    Abstract: R-(Z)-4-amino-3-chloro-2-pentenedioic acid is a novel antibacterial and isolated from Streptomyces viridogenes MA5450, ATCC 39387.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: July 15, 1986
    Assignee: Merck & Co., Inc.
    Inventors: Louis Chaiet, Richard L. Monaghan, Sheldon B. Zimmerman, Maria I. M. Fernandez
  • Purification of C-076 compounds by single column chromatography
    Patent number: 4172940
    Abstract: This case relates to a novel process for aiding in the isolation and purification of novel compounds which are produced by the microorganism, Streptomyces avermitilis. The process described herein utilizes a bed of activated alumina and a bed of activated carbon, respectively. The compounds which are isolated and purified are described generically as C-076 and have significant parasiticidal activity.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: October 30, 1979
    Assignee: Merck & Co., Inc.
    Inventor: Louis Chaiet
  • Novel fermentation process for the preparation of Sulfomycin
    Patent number: 4007090
    Abstract: This invention relates to a novel process for the preparation of the antibiotic Sulfomycin. The antibiotic is obtained by the fermentation of a nutrient medium with a Sulfomycin producing strain of the previously unknown microorganism Streptomyces cineroviridis.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: February 8, 1977
    Assignee: Merck & Co., Inc.
    Inventors: Louis Chaiet, Sebastian Hernandez, Sheldon B. Zimmerman