Patents Examined by T. Steinberg
  • Method for increasing the cohesiveness of powders in fluid beds
    Patent number: 5302318
    Abstract: This invention concerns the addition of fibrous alumina material to a phosphor or phosphor mixture before fluidization as a means of increasing the cohesiveness of the phosphor or phosphor mixture. The increase in cohesiveness can be controlled by varying the concentration of the fiber in the mixture.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: April 12, 1994
    Assignee: GTE Products Corporation
    Inventors: Arunava Dutta, Leonard V. Dullea
  • Thioester derived hindered phenols and aryl-amines as antioxidant and antiwear additives
    Patent number: 5132034
    Abstract: Thioester derived hindered phenols & thioester derived arylamines are effective antioxidant and antiwear additives for lubricants and fuels.
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: July 21, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Shih-Ying Hsu, Andrew G. Horodysky
  • Acylated mannich base mono and/or bis-succinimide lubricating oil additives
    Patent number: 5102570
    Abstract: A lubricating oil composition having improved dispersancy and antioxidancy. The dispersant being prepared by coupling mono- and/or bis-alkenyl succinimides with an aldehyde and hydroxyaromatic amine. The resulting coupled succinimide is then acylated with an acylating agent to form a Mannich hydroxyaromatic amine coupled acylated mono and/or bis-alkenyl succinimide.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: April 7, 1992
    Assignee: Texaco Inc.
    Inventors: Cyril A. Migdal, Richard A. Abramshe, Theodore E. Nalesnik