Patents by Inventor Rebecca Cristine Vieira

Rebecca Cristine Vieira 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).

  • LUBRICANT GREASE COMPOSITIONS COMPRISING POLYMERIC DIPHENYLAMINE ANTIOXIDANTS
    Publication number: 20190144776
    Abstract: Disclosed in certain embodiments is a lubricating grease composition comprising an antioxidant polymer (e.g., oligomer) composition comprising repeat units of diphenylamine monomers of formula I wherein R is H, C1-C18 alkyl, C2-C18 alkenyl, C2-C18 alkynyl, —C(O)C1-C18 alkyl, —C(O)aryl and R1, R2, R3 and R4 are each independently H or a linear or branched C1-C18 alkyl, C1-C18 alkoxy, C1-C18 alkylamino, C1-C18 dialkylamino, C1-C18 alkylthio, C2-C18 alkenyl, C2-C18 alkynyl or C7-C21 aralkyl and wherein the number average molecular weight (Mn) of the polymer composition is from about 350 g/mol to about 5000 g/mol.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 16, 2019
    Inventors: Liehpao Oscar Famg, Graciela Sanchez Jimenez, Mary Dery, Paul Odorisio, Bridgett Rakestraw, Sai Shum, David Khoshabo, Michael L. Alessi, Rebecca Cristine Vieira, Andrew Edmund Taggi
  • Antioxidant Polymeric Diphenylamine Compositions
    Publication number: 20190127526
    Abstract: An antioxidant polymer (e.g., oligomer) composition comprising repeat units of diphenylamine monomers of formula I wherein R is H, C1-C18 alkyl, C2-C18 alkenyl, C2-C18 alkynyl, —C(O)C1-C18 alkyl, —C(O)aryl and R1, R2, R3 and R4 are each independently H or a linear or branched C1-C18 alkyl, C1-C18 alkoxy, C1-C18 alkylamino, C1-C18 dialkylamino, C1-C18 alkylthio, C2-C18 alkenyl, C2-C18 alkynyl or C7-C21 aralkyl and wherein the number average molecular weight (Mn) of the polymer is from about 350 g/mol to about 5000 g/mol are highly effective antioxidants in lubricant compositions. The polymer compositions may be prepared by a process comprising subjecting diarylamine monomers to dehydrocondensation conditions.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Inventors: Liehpao Oscar Farng, Graciela Sanchez Jimenez, Mary Dery, Paul Odorisio, Bridgett Rakestraw, Sai Shum, David Khoshabo, Michael L. Alessi, Rebecca Cristine Vieira, Andrew Edmund Taggi
  • LUBRICANT COMPOSITIONS COMPRISING POLYMERIC DIPHENYLAMINE ANTIOXIDANTS
    Publication number: 20190127656
    Abstract: Disclosed in certain embodiments is a lubricating oil composition comprising an antioxidant polymer (e.g., oligomer) composition comprising repeat units of diphenylamine monomers of formula I wherein R is H, C1-C18 alkyl, C2-C18 alkenyl, C2-C18 alkynyl, —C(O)C1-C18 alkyl, —C(O)aryl and R1, R2, R3 and R4 are each independently H or a linear or branched C1-C18 alkyl, C1-C18 alkoxy, C1-C18 alkylamino, C1-C18 dialkylamino, C1-C18 alkylthio, C2-C18 alkenyl, C2-C18 alkynyl or C7-C21 aralkyl and wherein the number average molecular weight (Mn) of the polymer composition is from about 350 g/mol to about 5000 g/mol.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Inventors: Liehpao Oscar Farng, Graciela Sanchez Jimenez, Mary Dery, Paul Odorisio, Bridgett Rakestraw, Sai Shum, David Khoshabo, Michael L. Alessi, Rebecca Cristine Vieira, Andrew Edmund Taggi