Patents by Inventor Dhiman Bhattacharyya

Dhiman Bhattacharyya 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).

  • Patent number: 9957618
    Abstract: Described herein are reactors capable of sequentially or simultaneously depositing thin-film polymers onto a substrate by oxidative chemical vapor deposition (oCVD), initiated chemical vapor deposition (iCVD), and plasma-enhanced chemical vapor deposition (PECVD). The single-unit CVD reactors allow for the use of more than one CVD process on the same substrate without the risk of inadvertently exposing the substrate to ambient conditions when switching processes. Furthermore, the ability to deposit simultaneously polymers made by two different CVD processes allows for the exploration of new materials. In addition to assisting in the deposition of polymer films, plasma processes may be used to pretreat substrate surfaces before polymer deposition, or to clean the internal surfaces of the reactor between experiments.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: May 1, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Dhiman Bhattacharyya, Karen K. Gleason, Miles C. Barr
  • Patent number: 9051402
    Abstract: The present invention includes compositions and methods for synthesis of composite materials involving gas phase plasma polymerization to covalently plasma graft an organic molecule onto inorganic particles; covalently binding an organic monomer to the functionalized inorganic particles; and, polymerizing the organic monomers into inorganic/organic hybrid polymer composite materials.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 9, 2015
    Assignee: Board of Regents, The University of Texas System
    Inventors: Richard B. Timmons, Dattatray Wavhal, Dhiman Bhattacharyya, Narayan Mukherjee
  • Patent number: 9034659
    Abstract: A chemiresistive biosensor for detecting an analyte can include a high specific surface area substrate conformally coated with a conductive polymer, and a binding reagent immobilized on the conductive polymer, wherein the binding reagent has a specific affinity for the analyte. The conductive polymer can be deposited on a substrate by oCVD.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: May 19, 2015
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Dhiman Bhattacharyya, Karen K. Gleason
  • Publication number: 20140193925
    Abstract: A chemiresistive biosensor for detecting an analyte can include a high specific surface area substrate conformally coated with a conductive polymer, and a binding reagent immobilized on the conductive polymer, wherein the binding reagent has a specific affinity for the analyte. The conductive polymer can be deposited on a substrate by oCVD.
    Type: Application
    Filed: July 13, 2012
    Publication date: July 10, 2014
    Inventors: Dhiman Bhattacharyya, Karen K. Gleason
  • Publication number: 20140011955
    Abstract: The present invention includes compositions and methods for synthesis of composite materials involving gas phase plasma polymerization to covalently plasma graft an organic molecule onto inorganic particles; covalently binding an organic monomer to the functionalized inorganic particles; and, polymerizing the organic monomers into inorganic/organic hybrid polymer composite materials.
    Type: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: Board of Regents, The University of Texas System
    Inventors: Richard B. Timmons, Dattatray Wavhal, Dhiman Bhattacharyya, Narayan Mukherjee
  • Publication number: 20130224380
    Abstract: Described herein are reactors capable of sequentially or simultaneously depositing thin-film polymers onto a substrate by oxidative chemical vapor deposition (oCVD), initiated chemical vapor deposition (iCVD), and plasma-enhanced chemical vapor deposition (PECVD). The single-unit CVD reactors allow for the use of more than one CVD process on the same substrate without the risk of inadvertently exposing the substrate to ambient conditions when switching processes. Furthermore, the ability to deposit simultaneously polymers made by two different CVD processes allows for the exploration of new materials. In addition to assisting in the deposition of polymer films, plasma processes may be used to pretreat substrate surfaces before polymer deposition, or to clean the internal surfaces of the reactor between experiments.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Applicant: Massachusetts Institute of Technology
    Inventors: Dhiman Bhattacharyya, Karen K. Gleason, Miles C. Barr
  • Publication number: 20130089659
    Abstract: Described herein are methods of oxidative chemical vapor deposition of polyselenophene films onto non-conductive surfaces. The methods involve a single, dry step. The polyselenophene films formed by these methods have a lower band gap than the theoretically predicted value. Low-band-gap conjugated polymers are attractive for their applications in many devices including field effect transistors, light-emitting diodes, electrochromic devices, and photovoltaics.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 11, 2013
    Inventors: Dhiman Bhattacharyya, Karen K. Gleason
  • Publication number: 20120077936
    Abstract: The present invention includes compositions and methods for synthesis of composite materials involving gas phase plasma polymerization to covalently plasma graft an organic molecule onto particles; covalently binding an organic monomer to the functionalized particles; and, polymerizing the organic monomers into hybrid polymer composite materials.
    Type: Application
    Filed: December 6, 2011
    Publication date: March 29, 2012
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Richard B. Timmons, Dattatray Wavhal, Dhiman Bhattacharyya, Narayan Mukherjee
  • Patent number: 8088451
    Abstract: The present invention includes compositions and methods for synthesis of composite materials involving gas phase plasma polymerization to covalently plasma graft an organic molecule onto particles; covalently binding an organic monomer to the functionalized particles; and, polymerizing the organic monomers into hybrid polymer composite materials.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: January 3, 2012
    Assignee: Board of Regents, The University of Texas System
    Inventors: Richard B. Timmons, Dattatray Wavhal, Dhiman Bhattacharyya, Narayan Mukherjee
  • Publication number: 20100303877
    Abstract: The present invention provides hydrogels and methods of making hydrogels with precisely controlled levels of chemical compositions by mixing one or more monomers in a plasma reactor; polymerizing the one or more monomers into a polymer; crosslinking the polymer to form a hydrogel; immersing the hydrogel in a first solution; and adsorbing one or more solute species from the solution, wherein the one or more solute species are released at controlled rates.
    Type: Application
    Filed: June 1, 2010
    Publication date: December 2, 2010
    Applicant: Board of Regents, The University of Texas System
    Inventors: Richard B. Timmons, Wen Chyan, Dhiman Bhattacharyya
  • Publication number: 20100080987
    Abstract: The present invention provides a method for creating surface-tailored polymer coating for improved cells proliferation by converting one or more carbonaceous monomers each comprising one or more functional groups to a monomer vapor; contacting the monomer vapor and a substrate; and igniting a radio frequency plasma glow discharge to polymerize the monomer vapor to form surface-tailored polymer coating on the substrate at a thicknesses of between 25 and 300 nm and has a functional group surface density of between 3 and 9%, wherein the surface-tailored polymer coating enhances cell proliferation.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 1, 2010
    Applicant: Board of Regents, The University of Texas System
    Inventors: Richard Brendon Timmons, Dhiman Bhattacharyya, Kytai Troung Nguyen, Hao Xu
  • Publication number: 20090240013
    Abstract: The present invention includes compositions and methods for synthesis of composite materials involving gas phase plasma polymerization to covalently plasma graft an organic molecule onto particles; covalently binding an organic monomer to the functionalized particles; and, polymerizing the organic monomers into hybrid polymer composite materials.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 24, 2009
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Richard B. Timmons, Dattatray Wavhal, Dhiman Bhattacharyya, Narayan Mukherjee