Patents by Inventor Sayer B. Needelman

Sayer B. Needelman 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).

  • Monocarboxylic acid esters of propoxylated fatty alcohols as pigment dispersants
    Patent number: 6737543
    Abstract: A novel fatty polypropoxylate ester which is an ester of an aliphatic or an aromatic monoacid formed by reacting the acid with a stoichiometric excess of a polypropoxylated fatty alcohol. The compounds have the following structural formula: wherein R1 is a polypropoxylated fatty alcohol having the structural formula: wherein R5 is a saturated or unsaturated, substituted or unsubstituted aliphatic or aromatic moiety containing from 4 to 24 carbon atoms, and x is an integer from 3 to 30; and wherein R has the structural formula: wherein R2, R3 and R4 are independently selected from the group consisting of methyl, ethyl, propyl or isopropyl; or wherein R6 is H or OH or NH2 or methyl or ethyl. The compounds possess exceptional pigment dispersant and esthetic emollient properties for use in personal care and topical pharmaceutical preparations, e.g., lipsticks, cream foundations, waterproof sunscreens, sunscreen lotions.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: May 18, 2004
    Inventors: Ronald J. Smith, Maria K. Smith, Sayer B. Needelman, G. Frank DeMonico
  • Monocarboxylic acid esters of propoxylated fatty alcohols as pigment dispersants
    Publication number: 20020192249
    Abstract: A novel fatty polypropoxylate ester which is an ester of an aliphatic or an aromatic monoacid formed by reacting the acid with a stoichiometric excess of a polypropoxylated fatty alcohol.
    Type: Application
    Filed: February 26, 2002
    Publication date: December 19, 2002
    Inventors: Ronald J. Smith, Maria K. Smith, Sayer B. Needelman, G. Frank DeMonico