Patents by Inventor Shahzada Ahmad

Shahzada Ahmad 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).

  • NOVEL COMPOUND AND USE THEREOF AS A HOLE TRANSPORT MATERIAL
    Publication number: 20180006241
    Abstract: The present invention provides novel triazatruxene derivatives that are useful as hole transport materials (HTM), particularly, in optoelectronic devices. The utility of the novel compounds was confirmed in solid-state, sensitized solar cells based on organic-inorganic perovskites used as light harvesters. The devices achieved high power conversion efficiencies.
    Type: Application
    Filed: November 27, 2015
    Publication date: January 4, 2018
    Inventors: Shahzada AHMAD, Francisco Javier RAMOS, Samrana KAZIM, Manuel DOBLARE CASTELLANO, Mohammad Khaja NAZEERUDDIN, Michael GRAETZEL, Kasparas RAKSTYS
  • HIGH PERFORMANCE PEROVSKITE-SENSITIZED MESOSCOPIC SOLAR CELLS
    Publication number: 20160086739
    Abstract: The present invention relates to methods for preparing sensitized solar cells using organic-inorganic perovskites as sensitizers.
    Type: Application
    Filed: November 5, 2014
    Publication date: March 24, 2016
    Applicant: Abengoa Research S.L.
    Inventors: Julian Alexander Burschka, Norman Pellet, Mohammad Khaja Nazeeruddin, Michael Graetzel, Shahzada Ahmad
  • Process for the preparation of solid polymer electrolytes using ionic liquids
    Patent number: 8790537
    Abstract: The present invention provides a process for the preparation of solid polymer electrolytes using ionic liquids useful for electrochromic devices or electrochromic windows, which used an insitu polymerized solid polymer electrolyte encompassing an ionic liquid. Therefore the electrolyte is free from leakage, corrosion, side reaction and moisture sensitivity. The synthesis of polymeric electrolyte comprising of Ionic liquid containing at least one of the anions selected from the group of trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide [(CF3SO2)2N?] and bis(perfluoroethylsulfonyl)imide [(C2F5SO2)2N?], while varying the alkyl chain of the imidazolium ring is described and a simple method for preparing Ionic liquids has also been discussed. A method for preparing substantially pure molten salts i.e. ionic liquids is also described. Another objective of the present invention is to provide an electrochromic device utilizing these systems.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: July 29, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Shahzada Ahmad, Suhasini Avinash Agnihotry, Melepurath Deepa
  • PROCESS FOR THE PREPARATION OF SOLID POLYMER ELECTROLYTES USING IONIC LIQUIDS
    Publication number: 20100084600
    Abstract: The present invention provides a process for the preparation of solid polymer electrolytes using ionic liquids useful for electrochromic devices or electrochromic windows, which used an insitu polymerized solid polymer electrolyte encompassing an ionic liquid. Therefore the electrolyte is free from leakage, corrosion, side reaction and moisture sensitivity. The synthesis of polymeric electrolyte comprising of Ionic liquid containing at least one of the anions selected from the group of trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide [(CF3SO2)2N?] and bis(perfluoroethylsulfonyl)imide [(C2F5SO2)2N?], while varying the alkyl chain of the imidazolium ring is described and a simple method for preparing Ionic liquids has also been discussed. A method for preparing substantially pure molten salts i.e. ionic liquids is also described. Another objective of the present invention is to provide an electrochromic device utilizing these systems.
    Type: Application
    Filed: May 6, 2009
    Publication date: April 8, 2010
    Inventors: Shahzada Ahmad, Suhasini Avinash Agnihotry, Melepurath Deepa