Patents by Inventor Satyajit Samadder

Satyajit Samadder 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: 20250049692
    Abstract: The present invention relates to antiperspirant composition, particularly to antiperspirant composition having high levels of oil. The present inventors have found that when compositions having an unsaturated oil such as sunflower seed oil is present in the antiperspirant composition together with high total oil content present in the composition, the fabric which comes in contact with the composition in the axilla tends to get stained on repeated use. The present inventors have found that the problem of staining or yellowing of fabrics is significantly lowered when a combination of an alkoxylated aliphatic ether with an alkyl chain length of C3 to C10 and specific polyethylene glycol diester of fatty acid with chain length of C12 to C18 is used in an antiperspirant composition having high total oil content including unsaturated oil and an antiperspirant active.
    Type: Application
    Filed: December 8, 2022
    Publication date: February 13, 2025
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Somnath DAS, Satyajit SAMADDER
  • Patent number: 11844853
    Abstract: The present invention is in the field of personal care compositions, in particular compositions comprising antiperspirant actives. The present invention more particularly relates to compositions which do not contain the conventional and well established aluminium based actives, yet exhibit similar efficacy. This is achieved through use of an active which is a complex of a zinc salt with a ? amino acid in an anhydrous carrier.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: December 19, 2023
    Assignee: Conopco, Inc.
    Inventors: Amitava Pramanik, Satyajit Samadder, Priyanka Sarkar
  • Publication number: 20230293400
    Abstract: The present invention is in the field of personal care compositions, in particular compositions comprising antiperspirant actives. The present invention more particularly relates to compositions containing zinc based actives, yet exhibit good efficacy. This is achieved through use of an active which is a complex of a zinc salt with a ? amino acid, in an anhydrous solvent comprising an alcohol, along with a multivalent metal salt.
    Type: Application
    Filed: August 5, 2021
    Publication date: September 21, 2023
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Somnath DAS, Satyajit SAMADDER
  • Publication number: 20220409502
    Abstract: The present invention is in the field of personal care compositions, in particular compositions comprising antiperspirant actives. The present invention more particularly relates to compositions which do not contain the conventional and well established aluminium based actives, yet exhibit similar efficacy. This is achieved through use of an active which is a complex of a zinc salt with a ? amino acid in an anhydrous carrier comprising a specific mixture of ethanol and a C2 to C4 glycol.
    Type: Application
    Filed: November 17, 2020
    Publication date: December 29, 2022
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Somnath DAS, Satyajit SAMADDER, Philip Christopher WATERFIELD
  • Publication number: 20210308022
    Abstract: The present invention is in the field of personal care compositions, in particular compositions comprising antiperspirant actives. The present invention more particularly relates to compositions which do not contain the conventional and well established aluminium based actives, yet exhibit similar efficacy. This is achieved through use of an active which is a complex of a zinc salt with a ? amino acid in an anhydrous carrier.
    Type: Application
    Filed: July 22, 2019
    Publication date: October 7, 2021
    Inventors: Amitava Pramanik, Satyajit Samadder, Priyanka Sarkar