Patents by Inventor Leszek Doszczak

Leszek Doszczak 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).

  • Odorous acetals of ethyl vanillin and ethyl vanillin derivatives
    Patent number: 11661565
    Abstract: The present invention relates to new odorous acetals which are useful as fragrance or flavor materials in particular in providing vanilla and spicy notes with a natural impression resembling vanilla absolute.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: May 30, 2023
    Inventors: Leszek Doszczak, Andre Scholten, Wojciech I Dzik
  • Odorants and compositions comprising odorants
    Patent number: 11549079
    Abstract: The present invention relates to new classes of odorous oximes and their ketone intermediates (odorants) which are useful as fragrance or flavor materials in particular in providing cassis, catty, tropical, green, coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: January 10, 2023
    Inventors: Freddy Post, Leszek Doszczak, Nitesh Chaudhari
  • Odorants and compositions comprising odorants
    Patent number: 11447715
    Abstract: The present invention relates to new classes of odorous ketones (odorants) which are useful as fragrance or flavor materials in particular in providing coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 20, 2022
    Inventors: Freddy Post, Leszek Doszczak, Nitesh Chaudhari
  • ODORANT SECONDARY ALCOHOLS AND THEIR COMPOSITIONS
    Publication number: 20210284929
    Abstract: The present invention relates to new classes of odorous alcohols (odorants) derived from 2,3-dimethylbutene which are useful as fragrance or flavor materials in particular in providing natural piney olfactory notes with a complex profile to perfume, aroma or deodorizing/masking compositions.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 16, 2021
    Inventors: Freddy POST, Leszek DOSZCZAK, Nitesh CHAUDHARI, Raju KAPSE
  • Compositions comprising odorants
    Patent number: 11072761
    Abstract: The present invention relates to odorous 2- and/or 3-substituted 3-(allyloxy)propenes which are useful as fragrance or flavor ingredients in particular in providing green, fruity, pear and/or waxy olfactory notes. The present invention also relates to novel perfume, aroma or deodorizing/masking compositions comprising said odorants.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: July 27, 2021
    Assignee: S H KELKAR AND COMPANY LIMITED
    Inventors: Freddy Post, Kedar Ramesh Vaze, Leszek Doszczak, Andre Scholten
  • ODORANTS AND COMPOSITIONS COMPRISING ODORANTS
    Publication number: 20210207059
    Abstract: The present invention relates to new classes of odorous ketones (odorants) which are useful as fragrance or flavor materials in particular in providing coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.
    Type: Application
    Filed: October 16, 2018
    Publication date: July 8, 2021
    Inventors: Freddy Post, Leszek Doszczak, Nitesh Chaudhari
  • ODOROUS ACETALS OF ETHYL VANILLIN AND ETHYL VANILLIN DERIVATIVES
    Publication number: 20200399560
    Abstract: The present invention relates to new odorous acetals which are useful as fragrance or flavor materials in particular in providing vanilla and spicy notes with a natural impression resembling vanilla absolute.
    Type: Application
    Filed: December 6, 2018
    Publication date: December 24, 2020
    Inventors: Leszek DOSZCZAK, Andre SCHOLTEN, Wojciech I DZIK
  • ODORANTS AND COMPOSITIONS COMPRISING ODORANTS
    Publication number: 20200299611
    Abstract: The present invention relates to new classes of odorous oximes and their ketone intermediates (odorants) which are useful as fragrance or flavor materials in particular in providing cassis, catty, tropical, green, coniferous, thuya, floral and/or fruity olfactory notes to perfume, aroma or deodorizing/masking compositions.
    Type: Application
    Filed: October 16, 2018
    Publication date: September 24, 2020
    Inventors: Freddy Post, Leszek Doszczak, Nitesh Chaudhari
  • COMPOSITIONS COMPRISING ODORANTS
    Publication number: 20200157461
    Abstract: The present invention relates to odorous 2- and/or 3-substituted 3-(allyloxy)propenes which are useful as fragrance or flavor ingredients in particular in providing green, fruity, pear and/or waxy olfactory notes. The present invention also relates to novel perfume, aroma or deodorizing/masking compositions comprising said odorants.
    Type: Application
    Filed: August 2, 2018
    Publication date: May 21, 2020
    Applicant: S H KELKAR AND COMPANY LIMITED
    Inventors: Freddy Post, Kedar Ramesh Vaze, Leszek Doszczak, Andre Scholten