Patents Assigned to Oxazogen, Inc.
  • Patent number: 8791222
    Abstract: This invention concerns a polymer coating composition for use as non-focal optical power limiting dye containing polymeric materials. This composition contains: (1) one or more Modified Polymers comprising a Polymer, such as a hyperbranched polymer family, especially HB-PCS, HB-PU, HB-PUSOX or PC with one or more of: a) reverse saturable dye (RSA), b) multi-photon absorption dye (MPA), c) an azo dye, or d) absorption dye, which dye is chemically bonded to the pendant groups of the Polymer (along its chain and/or termini) or which forms a part of the backbone of the Polymer; (2) carbon nanotubes (CNT) as optical power limiters (OPL); and (3) a self-focusing component.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: July 29, 2014
    Assignee: Oxazogen, Inc.
    Inventors: Abhijit Sarkar, Petar R. Dvornic, James P. Godschalx
  • Patent number: 8709307
    Abstract: This invention concerns a polymer coating material composition (PCM) comprising as components a polymer matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives. The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1. The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores. These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: April 29, 2014
    Assignee: Oxazogen, Inc.
    Inventors: Abhijit Sarkar, George Rayfield
  • Patent number: 8709305
    Abstract: This invention concerns a polymer coating material composition (PCM) comprising as components a Polymer Matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon-rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives. The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1. The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores. These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: April 29, 2014
    Assignee: Oxazogen, Inc.
    Inventor: Abhijit Sarkar
  • Publication number: 20120194932
    Abstract: This invention concerns a polymer coating composition for use as non-focal optical power limiting dye containing polymeric materials. This composition contains: (1) one or more Modified Polymers comprising a Polymer, such as a hyperbranched polymer family, especially HB—PCS, HB—PU, HB—PUSOX or PC with one or more of: a) reverse saturable dye (RSA), b) multi-photon absorption dye (MPA), c) an azo dye, or d) absorption dye, which dye is chemically bonded to the pendant groups of the Polymer (along its chain and/or termini) or which forms a part of the backbone of the Polymer; (2) carbon nanotubes (CNT) as optical power limiters (OPL); and (3) a self-focusing component. This Modified Polymer composition contains the dye incorporated into the polymer chain backbone or chemically bonded to the terminal groups at the ends or along the chain of the polymer, which provides efficient protection from laser beam damage along with its self-focusing mechanism.
    Type: Application
    Filed: September 22, 2010
    Publication date: August 2, 2012
    Applicant: OXAZOGEN, INC.
    Inventors: Abhijit Sarkar, Petar R. Dvornic, James P. Godschalx
  • Publication number: 20120175571
    Abstract: This invention concerns a polymer coating material composition (PCM) comprising as components a Polymer Matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon-rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives. The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1. The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores. These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
    Type: Application
    Filed: July 20, 2011
    Publication date: July 12, 2012
    Applicant: OXAZOGEN, INC.
    Inventor: Abhijit Sarkar
  • Publication number: 20120002312
    Abstract: This invention concerns a solid polymer matrix for use as non-focal optical power limiting polymeric materials. This matrix contains: (1) a hyperbranched polymer family, especially HB-PCS OR HB-PU, HB-PUSOX or PC; (2) one or more of RSA dye, MPA dye, azo dye or DMNPAA; 3) CNT and 4) a self-focusing component. This solid polymer matrix provides efficient protection from laser beam damage along with its self-focusing mechanism.
    Type: Application
    Filed: March 12, 2010
    Publication date: January 5, 2012
    Applicant: OXAZOGEN, INC.
    Inventors: Abhijit Sarkar, Shamim Mirza, Salma Rahman, George Rayfield
  • Publication number: 20110012074
    Abstract: This invention concerns a polymer coating material composition (PCM) comprising as components a polymer matrix, carbon nanotubes (CNT) as optical power limiters (OPL), and carbon rich molecules. One aspect of the invention is where the Polymer Matrix is a hyperbranched polymer, such as a hyperbranched polycarbosiloxane polymer. Another aspect of the invention is where the CNT is a short multiwall carbon nanotube (sMWNT). A further aspect of the invention is where the carbon-rich molecules are triethoxysilyl anthracene derivatives. The composition wherein the ratio in weight percent of Polymer Matrix to CNT to carbon-rich molecule is from 94:3:3 to 99.8:0.1:0.1. The composition can further contain one or more of multi-photon absorbers (MPA) chromophores or reverse saturable absorbers (RSA) chromophores. These compositions can be used as: a) a film, b) a coating, c) a liquid, d) a solution, or e) a sandwiched film between two transparent substrates.
    Type: Application
    Filed: March 13, 2009
    Publication date: January 20, 2011
    Applicant: OXAZOGEN INC.
    Inventors: Abhijit Sarkar, George Rayfield
  • Patent number: 5731095
    Abstract: A water-soluble or water-dispersible fluorine-containing dendritic polymer surfactant having at least one terminal fluorocarbon moiety and at least one terminal anionic moiety, and which is suitable for use in preparing protective coating compositions is disclosed. The water-soluble or water-dispersible fluorine-containing dendritic polymer surfactants are represented by the general formula: ##STR1## where D represents a dendritic polymer, R.sub.F represents a fluorocarbon containing moiety, A.sup.- represents an anionic containing moiety, C.sup.+ represents a cation, T represents a terminal group of the dendritic polymer which has not been functionalized with a fluorocarbon or anionic moiety, n and m are at least each at least one, and the sum of n+m+q is the total number of terminal groups on the dendritic polymer. Also disclosed is a coating composition capable of forming a highly crosslinked, non-stick, protective coating.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: March 24, 1998
    Assignee: Oxazogen, Inc.
    Inventors: Larry A. Milco, Donald A. Tomalia