Patents by Inventor Kaustav Chaudhuri

Kaustav Chaudhuri 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).

  • Publication number: 20230312863
    Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. Then cooling the plastic melt and petroleum feedstock liquid blend with mixing to a temperature below the melting point of the plastic.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. TIMKEN, Tengfei LIU, Joel E. SCHMIDT, Kaustav CHAUDHURI
  • Publication number: 20230001383
    Abstract: A silica-alumina based composite material for making hydroprocessing catalysts, is disclosed. The silica-alumina composite material generally comprises at least two silica-aluminas, the first being a modified first silica-alumina, and the second being a second silica-alumina that is unmodified or modified. The first silica-alumina is modified to comprise silica and alumina domains and a silica-alumina interphase. The second silica-alumina may also be modified at the same time or separately to comprise silica and alumina domains and a silica-alumina interphase. The first silica-alumina and the second silica-alumina differ in one or more physical and/or chemical characteristics, e.g., the ratio of silica to alumina, surface area, pore size, pore volume, silica domain size, or alumina domain size. The invention can be used for making catalyst base materials and catalysts useful for upgrading hydrocarbon feedstocks to produce fuels, lubricants, chemicals and other hydrocarbonaceous compositions.
    Type: Application
    Filed: November 4, 2020
    Publication date: January 5, 2023
    Inventors: Ann LIANG, Trenton J. OTTO, Jifei JIA, Ling JIAO, Bao Q. LE, Kaustav CHAUDHURI, Bi-Zeng ZHAN
  • Publication number: 20220051393
    Abstract: The present invention is directed to a method for the prediction of coke morphology from feed characteristics using cross-polarized light optical microscopy, image segmentation, and statistical analysis.
    Type: Application
    Filed: July 26, 2021
    Publication date: February 17, 2022
    Inventors: Kaustav CHAUDHURI, Thomas M. REA, Estrella ROGEL, Cesar OVALLES, Paul E. HAJDU
  • Patent number: 10167200
    Abstract: A method is disclosed for synthesizing zincoaluminosilicate molecular sieve SSZ-41 having high aluminum content from a combined source of silicon oxide and aluminum oxide selected from one or more a FAU framework type zeolite and a colloidal aluminosilicate.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: January 1, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri
  • Publication number: 20180162738
    Abstract: A method is disclosed for synthesizing zincoaluminosilicate molecular sieve SSZ-41 having high aluminum content from a combined source of silicon oxide and aluminum oxide selected from one or more a FAU framework type zeolite and a colloidal aluminosilicate.
    Type: Application
    Filed: October 11, 2017
    Publication date: June 14, 2018
    Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri