Patents by Inventor Thomas Peter Hardt

Thomas Peter Hardt 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).

  • Metal working fluid additive composition
    Patent number: 11952552
    Abstract: An industrial fluid additive composition comprises one or more sequestering agents one or more compounds of formula (A): (A) wherein R1 and R2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 10 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 10 carbon atoms.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: April 9, 2024
    Assignee: Castrol Limited
    Inventor: Thomas Peter Hardt
  • Metal Working Fluid Additive Composition
    Publication number: 20230142153
    Abstract: An industrial fluid additive composition comprises one or more sequestering agents one or more compounds of formula (A): (A) wherein R1 and R2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 10 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 10 carbon atoms.
    Type: Application
    Filed: October 25, 2022
    Publication date: May 11, 2023
    Inventor: Thomas Peter Hardt
  • Metal working fluid additive composition
    Patent number: 11499118
    Abstract: An industrial fluid additive composition comprises one or more sequestering agents one or more compounds of formula (A): (A) wherein R1 and R2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 10 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 10 carbon atoms.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 15, 2022
    Assignee: CASTROL LIMITED
    Inventor: Thomas Peter Hardt
  • Metal Working Fluid Additive Composition
    Publication number: 20200325414
    Abstract: An industrial fluid additive composition comprises one or more sequestering agents one or more compounds of formula (A): (A) wherein R1 and R2 are independently selected from substituted hydrocarbyl moieties containing from 1 to 10 carbon atoms or unsubstituted hydrocarbyl moieties containing from 1 to 10 carbon atoms.
    Type: Application
    Filed: October 4, 2018
    Publication date: October 15, 2020
    Inventor: Thomas Peter Hardt