Patents by Inventor Eric M. Sirota

Eric M. Sirota 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).

  • Methods For Enhancing The Formation Of Mesophase In Pitch Compositions Derived From Hydrocarbon Feedstocks
    Publication number: 20240068132
    Abstract: Nucleation enhancement and/or growth rate improvement of mesophase in pitch compositions derived from hydrocarbon feedstocks can be achieved by: reacting in a reaction zone a blend comprising an isotropic feed and a seeding agent, to produce a reacted pitch having a mesophase content of about 10 vol % to 100 vol %, based on the total volume of the reacted pitch, and a softening point (Tsp) below 400° C.; wherein the seeding agent is about 50 wt % or less, based on the total weight of the blend; wherein the seeding agent has a mesophase content of about 0.01 vol % to 100 vol %, based on the total volume of the seeding agent.
    Type: Application
    Filed: November 10, 2021
    Publication date: February 29, 2024
    Applicant: ExxonMobil Technology and Engineering Company
    Inventors: Manesh Gopinadhan, Stuart E. Smith, Nicole M. Callen, Clarence E. Chase, Kazem V. Edmond, Srinivasan Rajagopalan, Eric B. Sirota, Daniel J. Ryan
  • Solid forms of ceftolozane and processes for preparing
    Patent number: 11542279
    Abstract: The instant invention is related to a novel solid form of ceftolozane sulfate (the DMAc solvate of ceftolozane sulfate (Form 3)), compositions comprising ceftolozane sulfate DMAc solvate (Form 3), synthesis of Form 3 and an improved crystallization process using Form 3 to prepare ceftolozane sulfate Form 2. Novel compositions also include ceftolozane sulfate solid Form 3 and/or other crystalline and amorphous solid forms of ceftolozane.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: January 3, 2023
    Assignee: Merck Sharp & Dohme LLC
    Inventors: Kevin Matthew Maloney, Eric M. Sirota, Richard J. Varsolona, Donald R. Gauthier, Jr., Hong Ren
  • SOLID FORMS OF CEFTOLOZANE AND PROCESSES FOR PREPARING
    Publication number: 20220056045
    Abstract: The instant invention is related to a novel solid form of ceftolozane sulfate (the DMAc solvate of ceftolozane sulfate (Form 3)), compositions comprising ceftolozane sulfate DMAc solvate (Form 3), synthesis of Form 3 and an improved crystallization process using Form 3 to prepare ceftolozane sulfate Form 2. Novel compositions also include ceftolozane sulfate solid Form 3 and/or other crystalline and amorphous solid forms of ceftolozane.
    Type: Application
    Filed: June 1, 2017
    Publication date: February 24, 2022
    Applicant: Merck Sharp & Dohme Corp.
    Inventors: Kevin Matthew Maloney, Eric M. Sirota, Richard J. Varsolona, Donald R. Gauthier, Jr., Hong Ren