Patents by Inventor Adham Ahmed

Adham Ahmed 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).

  • Porous particles for liquid chromatography and processes for the preparation thereof
    Patent number: 10493428
    Abstract: Superficially porous silica particles are provided as well as a one-pot process for making the superficially porous particles, the process comprising hydrolyzing and condensing a silica precursor comprising a functional group to form superficially porous particles, the superficially porous particles comprising silica microparticles having silica nanoparticles bound to the surface of the microparticles. The nanoparticles provide a porous outer layer on the microparticles. The superficially porous particles are useful as a stationary phase in liquid chromatography and allow for fast mass transfer and separation of samples.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: December 3, 2019
    Assignee: Thermo Electron Manufacturing Limited
    Inventors: Harald Ritchie, Adham Ahmed, Peter Myers, Haifei Zhang
  • Processes for making silver nanostructures
    Patent number: 10130992
    Abstract: The present invention is directed to a process for making silver nanostructures, comprising reacting at least one polyol and at least one silver compound that is capable of producing silver metal when reduced, in the presence of a source of chloride or bromide ions, at least one copolymer, and at least one acid scavenger. The present invention is also directed to silver nanostructures made by the processes described herein.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: November 20, 2018
    Assignee: RHODIA OPERATIONS
    Inventors: Ahmed Alsayed, Adham Ahmed, Chantal Badre, Lawrence Alan Hough, Celine Anna Simone Burel
  • PROCESSES FOR MAKING SILVER NANOSTRUCTURES
    Publication number: 20160325352
    Abstract: The present invention is directed to a process for making silver nanostructures, comprising reacting at least one polyol and at least one silver compound that is capable of producing silver metal when reduced, in the presence of a source of chloride or bromide ions, at least one copolymer, and at least one acid scavenger. The present invention is also directed to silver nanostructures made by the processes described herein.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 10, 2016
    Inventors: Ahmed ALSAYED, Adham AHMED, Chantal BADRE, Lawrence Alan HOUGH, Celine Anna Simone BUREL
  • POROUS PARTICLES FOR LIQUID CHROMATOGRAPHY AND PROCESSES FOR THE PREPARATION THEREOF
    Publication number: 20140329673
    Abstract: Superficially porous silica particles are provided as well as a one-pot process for making the superficially porous particles, the process comprising hydrolyzing and condensing a silica precursor comprising a functional group to form superficially porous particles, the superficially porous particles comprising silica microparticles having silica nanoparticles bound to the surface of the microparticles. The nanoparticles provide a porous outer layer on the microparticles.
    Type: Application
    Filed: November 22, 2012
    Publication date: November 6, 2014
    Inventors: Harald Ritchie, Adham Ahmed, Peter Myers, Haifei Zhang