Patents by Inventor Thomas Petri

Thomas Petri 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).

  • Coalescer filter media
    Patent number: 12673282
    Abstract: Filter media are generally described. In some embodiments, a filter media has one or more properties that enhance its suitability for use in coalescer filters. For instance, the filter media may have a particularly low pressure drop and/or may have a particularly high efficiency. In some instances, such properties may be obtained without the inclusion of fluorinated materials, government-regulated substances, and/or toxic substances (e.g., PFAS) in the filter media or with the inclusion of no more than de minimis amounts of such substances.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: July 7, 2026
    Assignee: Hollingsworth & Vose Company
    Inventors: Julia Anuscha Kronawitt, Thomas Petri
  • COALESCER FILTER MEDIA
    Publication number: 20250222379
    Abstract: Filter media are generally described. In some embodiments, a filter media has one or more properties that enhance its suitability for use in coalescer filters. For instance, the filter media may have a particularly low pressure drop and/or may have a particularly high efficiency. In some instances, such properties may be obtained without the inclusion of fluorinated materials, government-regulated substances, and/or toxic substances (e.g., PFAS) in the filter media or with the inclusion of no more than de minimis amounts of such substances.
    Type: Application
    Filed: January 8, 2024
    Publication date: July 10, 2025
    Applicant: Hollingsworth & Vose Company
    Inventors: Julia Anuscha Kronawitt, Thomas Petri
  • FILTER MEDIA AND RELATED FOAM FORMING METHODS
    Publication number: 20240399631
    Abstract: Filter media and related methods of foam forming the filter media are generally described herein.
    Type: Application
    Filed: May 31, 2023
    Publication date: December 5, 2024
    Applicant: Hollingsworth & Vose Company
    Inventors: Thomas Petri, Julia Anuscha Kronawitt, Michael Amulf Hermann Neukirch
  • FILTER MEDIA COMPRISING FIBRILLATED FIBERS AND GLASS FIBERS
    Publication number: 20210387120
    Abstract: Filter media comprising fibrillated fibers and glass fibers are generally described.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 16, 2021
    Applicant: Hollingsworth & Vose Company
    Inventors: Thomas Petri, Sudhakar Jaganathan
  • Metal-free dithiophosphoric acid derivatives
    Patent number: 5482638
    Abstract: Addition products of monoepoxides or diepoxides of mono- or polyunsaturated monocyclic or bicyclic hydrocarbons and dithiophosphoric acids, a process for the production of the adducts from the corresponding dithiophosphoric acids and epoxides and the use of the addition products as lubricant additives in lubricants based on mineral oils or native oils.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: January 9, 1996
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Thomas Dimmig, Gunter Jager, Thomas Petri
  • Metal-free dithiophosphoric acid derivatives
    Patent number: 5412140
    Abstract: Alkyl glycidol ether/dithiophosphoric acid addition products corresponding to the following general formula:[R.sup.1 ]O[C(H)(H)][C(H)C(H)(H)(OH)(R.sup.4)] (I)in whichR.sup.4 =[(R.sup.2 O)(R.sup.3 O)]P(S)S,R.sup.1 . . . R.sup.3 =alkyl, aryl,a process for the production of the adducts from the corresponding dithiophosphoric acids and glycidol ethers and the use of the addition products as lubricant additives in lubricants based on mineral oils or native oils.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: May 2, 1995
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Thomas Dimmig, Gunter Jager, Thomas Petri, Wolfram Radig, Gunther Schilling, Jurgen Braun, Volker Schafer