Patents by Inventor Md Rashedul Islam

Md Rashedul Islam 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).

  • Apparatus and computerized method for predicting asphaltene precipitation based on aggregation thermodynamics
    Patent number: 11177021
    Abstract: The present invention includes a method for thermodynamic modeling of asphaltene precipitation comprising: calculating the Gibbs free energy for the transition between asphaltene molecules in solution into an imaginary crystalline asphaltene nanoaggregates or asphaltene nanocrystals; calculating the Gibbs free energy for the transition between asphaltene nanoaggregates or nanocrystals redissolving into colloidal asphaltene nanoaggregates using the computer: and predicting asphaltene solubility in a solvent, wherein the predicted asphaltene solubility is used to add a solvent to a liquid, semi-solid, or solid comprising asphaltenes to prevent, e.g., fouling of a wellbore, pipeline, downstream unit operations, to provide flow assurance for crude oil pipeline network, or for petroleum crude blending.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: November 16, 2021
    Assignee: Texas Tech University System
    Inventors: Chau-Chyun Chen, Yifan Hao, Meng Wang, Md Rashedul Islam
  • Apparatus and computerized method for optimizing or generating a sigma profile for a molecule
    Patent number: 10325677
    Abstract: An apparatus and computerized method optimizes or generates a sigma profile for a molecule by receiving a sigma profile for the molecule, calculating an activity coefficient for the molecule using the sigma profile for the molecule, calculating a solubility for the molecule using the activity coefficient for the molecule, optimizing or adjusting the sigma profile for the molecule by adjusting the sigma profile using an objective function and one or more constraints, providing the sigma profile to an output device communicably coupled to a processor.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 18, 2019
    Assignee: Texas Tech University System
    Inventors: Chau-Chyun Chen, Md Rashedul Islam
  • Apparatus and Computerized Method for Predicting Asphaltene Precipitation Based on Aggregation Thermodynamics
    Publication number: 20180314806
    Abstract: The present invention includes a method for thermodynamic modeling of asphaltene precipitation comprising: calculating the Gibbs free energy for the transition between asphaltene molecules in solution into an imaginary crystalline asphaltene nanoaggregates or asphaltene nanocrystals; calculating the Gibbs free energy for the transition between asphaltene nanoaggregates or nanocrystals redissolving into colloidal asphaltene nanoaggregates using the computer: and predicting asphaltene solubility in a solvent, wherein the predicted asphaltene solubility is used to add a solvent to a liquid, semi-solid, or solid comprising aspahaltenes to prevent, e.g., fouling of a wellbore, pipeline, downstream unit operations, to provide flow assurance for crude oil pipeline network, or for petroleum crude blending.
    Type: Application
    Filed: April 27, 2016
    Publication date: November 1, 2018
    Inventors: Chau-Chyun Chen, Yifan Hao, Meng Wang, Md Rashedul Islam
  • Apparatus and Computerized Method for Optimizing or Generating a Sigma Profile for a Molecule
    Publication number: 20170083688
    Abstract: An apparatus and computerized method optimizes or generates a sigma profile for a molecule by receiving a sigma profile for the molecule, calculating an activity coefficient for the molecule using the sigma profile for the molecule, calculating a solubility for the molecule using the activity coefficient for the molecule, optimizing or adjusting the sigma profile for the molecule by adjusting the sigma profile using an objective function and one or more constraints, providing the sigma profile to an output device communicably coupled to a processor.
    Type: Application
    Filed: May 11, 2015
    Publication date: March 23, 2017
    Inventors: Chau-Chyun Chen, Md Rashedul Islam