Patents by Inventor Amitava Pramanik

Amitava Pramanik 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).

  • Patent number: 12109295
    Abstract: The invention relates to a cosmetic composition comprising a low molecular weight silk fibroin and a cosmetically acceptable carrier; wherein said low molecular weight silk fibroin comprises at least 85 parts by weight peptides of molecular weight less than 2500 Da, where amino acid sequence of at least 50 wt % of said peptides is GAGY, GAGAGAGY, GAGVGAGY or AWSSESDF and where said silk fibroin is produced by a process comprising the steps of: (i) mixing an aqueous solution comprising 0.01 to 20 wt % of a high molecular weight silk fibroin of weight average molecular weight 6 to 100 KDa with ochymotrypsin at temperature of 25 to 45° C.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: October 8, 2024
    Assignee: Conopco, Inc.
    Inventors: Han Cao, Hong Chen, Xin Chen, Amitava Pramanik, Zhengzhong Shao, Jinrong Yao, Weizheng Zhou
  • 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: 20210392900
    Abstract: The present invention relates to an antimicrobial particulate composition and a process for preparing the same. The invention also relates to a personal care composition comprising the antimicrobial particulate composition. The invention ensures desired efficacy on preparation at production scale while exhibiting a desired light coloured appearance of the composition.
    Type: Application
    Filed: March 1, 2019
    Publication date: December 23, 2021
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Rupak MITRA, Girish MURALIDHARAN, Amitava PRAMANIK, Samarpita SARKAR, Somnath DAS
  • Publication number: 20210378935
    Abstract: The invention relates to a cosmetic composition comprising a low molecular weight silk fibroin and a cosmetically acceptable carrier; wherein said low molecular weight silk fibroin comprises at least 85 parts by weight peptides of molecular weight less than 2500 Da, where amino acid sequence of at least 50 wt % of said peptides is GAGY, GAGAGAGY, GAGVGAGY or AWSSESDF and where said silk fibroin is produced by a process comprising the steps of: (i) mixing an aqueous solution comprising 0.01 to 20 wt % of a high molecular weight silk fibroin of weight average molecular weight 6 to 100 KDa with ochymotrypsin at temperature of 25 to 45° C.
    Type: Application
    Filed: October 8, 2019
    Publication date: December 9, 2021
    Inventors: Han Cao, Hong Chen, Xin Chen, Amitava PRAMANIK, Zhengzhong Shao, Jinrong Yao, Weizheng ZHOU
  • 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
  • Publication number: 20200397673
    Abstract: This invention relates to an antimicrobial composition more particularly a personal care or cleansing composition for care or cleansing of hair or body. It more particularly relates to combination of crystal habit modified zinc oxide with zinc pyrithione that interact to provide synergistic antimicrobial efficacy for anti-dandruff benefits.
    Type: Application
    Filed: November 26, 2018
    Publication date: December 24, 2020
    Inventors: Somnath DAS, Amitava PRAMANIK
  • Publication number: 20200368125
    Abstract: Disclosed is cleansing composition comprising: (i) a surfactant; and, (ii) a complex of an oligodynamic metal with a chemoattractant, wherein zeta potential of the complex is from +30 mV to ?30 mV and wherein said complex is not in nanoparticulate form; and wherein the chemoattractant is a protein. Also disclosed is a method of sanitising an animate or inanimate substrate by reducing viable count of bacteria residing thereon by at least 2-log, comprising the steps of: (i) applying to the substrate a composition as disclosed or an aqueous suspension thereof; (ii) allowing said composition or the suspension to remain in contact with said substrate for a contact time of up to 60 seconds; and, (iii) rinsing the composition or the suspension with water, or wiping it with a wipe.
    Type: Application
    Filed: November 28, 2018
    Publication date: November 26, 2020
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: GIRISH MURALIDHARAN, Amitava PRAMANIK
  • Publication number: 20200368120
    Abstract: Disclosed are porous composite particles and compositions comprising the same. The porous composite particles comprising base of an amphiphilic or hydrophobic polymer and 0.1 to 20% of a pigment based on the total weight of porous composite particles, where said particles have 50 to 95 vol % internal porosity and an outer surface which is either continuous and devoid of pores or is discontinuous comprising plurality of pores whose total area is 0.01 to 30% of the total outer surface area. When typically applied, the compositions impart improving the characteristics of skin.
    Type: Application
    Filed: November 30, 2018
    Publication date: November 26, 2020
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Guanghui MA, Xiangming NA, Amitava PRAMANIK, Weiqing ZHOU, Weizheng ZHOU
  • Publication number: 20200360266
    Abstract: The invention relates to a hair care composition for reducing hair breakage, and delivering hair repair, lubrication, strengthening and smoothness benefit. The benefits are delivered through a composition a hair care composition comprising: (i) silk fibroin derived from silkworm Bombyx mori; (ii) cationic compound selected from oligo chitosan or an amino acid; and, (iii) a cosmetically acceptable vehicle.
    Type: Application
    Filed: October 9, 2018
    Publication date: November 19, 2020
    Inventors: Han CAO, Hong CHEN, Xin CHEN, Amitava PRAMANIK, Zhengzhong SHAO, Jinrong YAO, Weizheng ZHOU
  • Publication number: 20200360249
    Abstract: Disclosed is an antimicrobial composition comprising a polyvalent metal pyrithione and a complex of a polyvalent metal with pyridine amide. The composition may be used for personal cleansing and is especially preferred to be delivered as a shampoo or hair conditioner.
    Type: Application
    Filed: August 28, 2018
    Publication date: November 19, 2020
    Inventors: Somnath DAS, Amitava PRAMANIK
  • Publication number: 20200253845
    Abstract: Disclosed is an antimicrobial composition comprising zinc pyrithione and habit modified crystals of zinc oxide preferably comprising entrapped particles of water soluble protein. The protein may be selected from at least one of sericin, bovine serum albumin, gelatin, egg-albumin, casein, zein, whey or lysozyme. The composition may be used for personal cleansing and is especially preferred to be delivered as a shampoo or hair conditioner.
    Type: Application
    Filed: August 27, 2018
    Publication date: August 13, 2020
    Inventors: Somnath DAS, Amitava PRAMANIK
  • Patent number: 10731016
    Abstract: A method of modifying the dispensing properties of a container, said method comprising the following steps: ?providing a container comprising a container wall having an inner surface and a dispensing opening, said inner surface being composed of hydrophobic polymer; ?subjecting the inner surface of the container to an oxidative surface treatment; ?applying a coating layer onto the inner surface of the container by coating said inner surface with a coating solution containing amide slip agent selected from optionally fluorinated fatty acid amide, polysiloxane amide and combinations thereof; and ?removing the solvent in the coating layer by evaporation.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: August 4, 2020
    Assignee: Conopco, Inc.
    Inventors: Girish Muralidharan, Amitava Pramanik, Sumana Roychowdhury
  • Patent number: 10682298
    Abstract: The present invention relates to a process for preparing an antimicrobial particulate composition. The invention also relates to personal care or hygiene composition comprising an antimicrobial particulate composition obtainable by the process in accordance with this invention. The invention more particularly relates to a process for preparing an antimicrobial metal nanoparticles immobilized in an inorganic porous material and also incorporating these particles in personal care or hygiene compositions. The antimicrobial particulate composition comprises 0.05% to 3% by weight of antimicrobial metal particles and 97 to 99.95% by weight of immobilizer comprising an inorganic porous material selected from zinc oxide, magnesium hydroxide or calcium carbonate.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: June 16, 2020
    Assignee: CONOPCO, INC.
    Inventors: Somnath Das, Satyaranjan Gupta, Rupak Mitra, Girish Muralidharan, Amitava Pramanik
  • Patent number: 10661496
    Abstract: The present invention relates to surface modification of materials. In particular the invention relates to a process for surface modification of polymeric materials to make the surface non-stick in order to reduce the ability of materials to stick on it and thus provide an easy flow. The process comprises embossing the surface of an object with a pattern comprising micropillars having different shapes (circle, square, rectangular, polygonal prismatic) with an equivalent circular diameter, height and pitch in the range 10-200 microns; applying a layer of adhesive to get a coverage of 0.1 to 5 mg/cm on the embossed surface either by spray coating or dip coating; depositing 0.2 to 1.2 mg/cm of hydrophobic particles wherein the hydrophobic particles have a particle size in the range 0.1 to 10 microns.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 26, 2020
    Assignee: CONOPCO, INC.
    Inventors: Somnath Das, Girish Muralidharan, Amitava Pramanik
  • Publication number: 20190276622
    Abstract: A method of modifying the dispensing properties of a container, said method comprising the following steps: ?providing a container comprising a container wall having an inner surface and a dispensing opening, said inner surface being composed of hydrophobic polymer; ?subjecting the inner surface of the container to an oxidative surface treatment; ?applying a coating layer onto the inner surface of the container by coating said inner surface with a coating solution containing amide slip agent selected from optionally fluorinated fatty acid amide, polysiloxane amide and combinations thereof; and ?removing the solvent in the coating layer by evaporation.
    Type: Application
    Filed: June 22, 2017
    Publication date: September 12, 2019
    Inventors: Girish MURALIDHARAN, Amitava PRAMANIK, Sumana ROYCHOWDHURY
  • Publication number: 20190262243
    Abstract: The present invention relates to a process for preparing an antimicrobial particulate composition. The invention also relates to personal care or hygiene composition comprising an antimicrobial particulate composition obtainable by the process in accordance with this invention. The invention more particularly relates to a process for preparing an antimicrobial metal nanoparticles immobilized in an inorganic porous material and also incorporating these particles in personal care or hygiene compositions. The antimicrobial particulate composition comprises 0.05% to 3% by weight of antimicrobial metal particles and 97 to 99.95% by weight of immobilizer comprising an inorganic porous material selected from zinc oxide, magnesium hydroxide or calcium carbonate.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Inventors: Somnath DAS, Satyaranjan GUPTA, Rupak MITRA, Girish MURALIDHARAN, Amitava PRAMANIK
  • Publication number: 20180117828
    Abstract: The present invention relates to surface modification of materials. In particular the invention relates to a process for surface modification of polymeric materials to make the surface non-stick in order to reduce the ability of materials to stick on it and thus provide an easy flow. The process comprises embossing the surface of an object with a pattern comprising micropillars having different shapes (circle, square, rectangular, polygonal prismatic) with an equivalent circular diameter, height and pitch in the range 10-200 microns; applying a layer of adhesive to get a coverage of 0.1 to 5 mg/cm on the embossed surface either by spray coating or dip coating; depositing 0.2 to 1.2 mg/cm of hydrophobic particles wherein the hydrophobic particles have a particle size in the range 0.1 to 10 microns.
    Type: Application
    Filed: February 16, 2016
    Publication date: May 3, 2018
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Somnath DAS, Girish MURALIDHARAN, Amitava PRAMANIK
  • Publication number: 20170209347
    Abstract: The present invention relates to a process for preparing an antimicrobial particulate composition. The invention also relates to personal care or hygiene composition comprising an antimicrobial particulate composition obtainable by the process in accordance with this invention. The invention more particularly relates to a process for preparing an antimicrobial metal nanoparticles immobilized in an inorganic porous material and also incorporating these particles in personal care or hygiene compositions. The antimicrobial particulate composition comprises 0.05% to 3% by weight of antimicrobial metal particles and 97 to 99.95% by weight of immobilizer comprising an inorganic porous material selected from zinc oxide, magnesium hydroxide or calcium carbonate.
    Type: Application
    Filed: July 16, 2015
    Publication date: July 27, 2017
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Somnath DAS, Satyaranjan GUPTA, Rupak MITRA, Girish MURALIDHARAN, Amitava PRAMANIK
  • Publication number: 20110232522
    Abstract: It has been found that hydrophobicity and stain-resistance can be imparted to a substrate by contacting the substrate with soap and a polyaluminum chloride in presence of water under specific range of pH, while the further addition of a quaternary silicone oil imparts oily soil repellence.
    Type: Application
    Filed: November 25, 2009
    Publication date: September 29, 2011
    Inventors: Somnath Das, Amitava Pramanik, Srinivasa Raman, Arpita Sarkar
  • Publication number: 20100281624
    Abstract: The present invention provides a method or treating a fabric comprising the steps of: a) contacting the fabric with a compound of an alkaline earth metal, titanium or zinc, followed by; b) contacting the fabric with C8-C24 soap, and; contacting the fabric with a water soluble compound of aluminium prior to or concurrent with the step (b), where each of the steps is carried out in presence of an aqueous carrier.
    Type: Application
    Filed: August 28, 2008
    Publication date: November 11, 2010
    Inventors: Somnath Das, Amitava Pramanik, Poulami Sengupta, Gopa Kumar Velayudhan Nair