Patents by Inventor Raghavendra Navath

Raghavendra Navath 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).

  • Publication number: 20170028075
    Abstract: Injectable hydrogels in the form of crosslinked nano beads or particle in the size range 5 nm to 10 ?m, comprising PAMAM dendrimer with asymmetrical peripheral end groups such that one of the terminal groups is involved in formation of hydrogel and the other in involved in the conjugation of drugs or imaging agents are formed by reaction of the PAMAM dendrimer with asymmetrical end groups with linear, branched, hyperbranched or star shaped polymers with functionalized terminal groups. The PAMAM dendrimer with asymmetrical terminal groups consists of a Generation 2 and above PAMAM dendrimer with symmetrical end groups modified using the amino acids or their modified forms. The gel is formed as small crosslinked particles in the size range 25 nm to 10 ?m and is suitable for injectable delivery of hydrogel or ocular delivery for the purpose of therapeutic treatment and imaging.
    Type: Application
    Filed: September 27, 2016
    Publication date: February 2, 2017
    Inventors: Kannan Rangaramanujam, Sujatha Kannan, Roberto Romero, Raghavendra Navath, Anupa Menjoge
  • Patent number: 9526794
    Abstract: The invention discloses injectable hydrogels which are in the form of crosslinked nano beads or particle in the size range 5 nm to 10 ?m, comprising PAMAM dendrimer with asymmetrical peripheral end groups such that one of the terminal groups is involved in formation of hydrogel and the other in involved in the conjugation of drugs or imaging agents and their methods of preparation. The said gel is formed by reaction of the PAMAM dendrimer with asymmetrical end groups with other polymer wherein the other polymer is selected from the group of linear, branched, hyperbranched or star shaped polymers with functionalized terminal groups. The PAMAM dendrimer with asymmetrical terminal groups consists of a Generation 2 and above PAMAM dendrimer with symmetrical end groups modified using the amino acids or their modified forms.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: December 27, 2016
    Assignees: Wayne State University, National Institutes of Health
    Inventors: Kannan Rangaramanujam, Sujatha Kannan, Roberto Romero, Raghavendra Navath, Anupa Menjoge
  • Publication number: 20130136697
    Abstract: The invention discloses injectable hydrogels which are in the form of crosslinked nano beads or particle in the size range 5 nm to 10 ?m, comprising PAMAM dendrimer with asymmetrical peripheral end groups such that one of the terminal groups is involved in formation of hydrogel and the other in involved in the conjugation of drugs or imaging agents and their methods of preparation. The said gel is formed by reaction of the PAMAM dendrimer with asymmetrical end groups with other polymer wherein the other polymer is selected from the group of linear, branched, hyperbranched or star shaped polymers with functionalized terminal groups. The PAMAM dendrimer with asymmetrical terminal groups consists of a Generation 2 and above PAMAM dendrimer with symmetrical end groups modified using the amino acids or their modified forms.
    Type: Application
    Filed: March 31, 2011
    Publication date: May 30, 2013
    Applicants: NATIONAL INSTITUTES OF HEALTH, WAYNE STATE UNIVERSITY
    Inventors: Rangaramanujam M. Kannan, Sujatha Kannan, Roberto Romero, Raghavendra Navath, Anupa Menjoge