Patents by Inventor Prithwiraj Maitra

Prithwiraj Maitra 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: 20110104091
    Abstract: Cosmetic compositions comprising water-redispersible polymers are provided, as well as methods for using such compositions in cosmetics that afford powder-to-liquid and moisture-resistant benefits. These cosmetics can provide easier portability, as well as long wear benefits when topically applied to the skin or hair.
    Type: Application
    Filed: October 7, 2010
    Publication date: May 5, 2011
    Applicant: Avon Products, Inc.
    Inventors: Prithwiraj Maitra, Wendy Chan
  • Publication number: 20100266649
    Abstract: A gel system comprising a fractal network of nanoparticles and macroscopic particles is disclosed. The gel system is capable of forming an “optical gel” effective to blurrfine lines and wrinkles as a consequence of the size domain differences between the fractal particles and the macroscopic particles. Cosmetic compositions comprising such gels and methods for their use are also disclosed.
    Type: Application
    Filed: November 19, 2008
    Publication date: October 21, 2010
    Applicant: AVON PRODUCTS, INC.
    Inventors: Prithwiraj Maitra, Steven E. Brown, John R. Glynn, JR., Jason Rothouse, John C. Brahms, Michael J. Fair
  • Publication number: 20100266648
    Abstract: Compositions and methods are disclosed for imparting super-hydrophobic properties to cosmetics, which can be used to significantly improve water repellency compared to traditional cosmetics. The compositions comprise a hydrophobic film former, and hydrophobic particles, in an emulsion base.
    Type: Application
    Filed: November 14, 2008
    Publication date: October 21, 2010
    Applicant: AVON PRODUCTS, INC.
    Inventors: Rahul A. Ranade, John R. Glynn, Mark S. Garrison, Shari Martin, Prithwiraj Maitra
  • Patent number: 7750073
    Abstract: Compositions and methods for the formation of physically cross-linked thermoplastic elastomeric films are disclosed. The disclosed films are long-lasting, flexible, transfer resistant, and water-proof. The film-forming compositions comprise a thermoplastic elastomer, a tackifier resin, and a volatile solvent useful for formulating cosmetics, personal care products, and pharmaceutical compositions.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: July 6, 2010
    Assignee: Avon Products, Inc.
    Inventors: John C. Brahms, Prithwiraj Maitra, Tao Zheng, David A. Binder
  • Patent number: 7750106
    Abstract: Compositions and methods for the in situ formation of hydrosilylation (addition) cross-linked organosiloxane films are disclosed. The disclosed films are long-lasting, flexible, transfer-resistant, and water-proof. The film-forming compositions generally comprise alkoxy-terminated organosiloxane polymers and a catalyst and are useful for formulating cosmetics and personal care products.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: July 6, 2010
    Assignee: Avon Products, Inc.
    Inventors: Tao Zheng, Derrick B. McKie, John C. Brahms, Prithwiraj Maitra
  • Publication number: 20090175915
    Abstract: The present invention relates to cosmetic, dermatological, and pharmaceutical compositions that deliver, in an acceptable vehicle or carrier comprising a film former or wax and an effective amount of nanoparticles and one or more pigments and methods for improving the appearance of a biological surface by altering the optical properties of the biological surface. The compositions of the invention enhance color and may be topically applied to the biological surface in an amount effective in improving the aesthetic and natural appearance of the biological surface.
    Type: Application
    Filed: January 8, 2008
    Publication date: July 9, 2009
    Applicant: Avon Products, Inc.
    Inventors: Prithwiraj Maitra, Steven Carlo, Rahul A. Ranade
  • Publication number: 20090155586
    Abstract: The invention relates to topical compositions comprising inorganic particles coated or embedded on the surface of macroscopic particles, methods of preparing the compositions, and uses thereof. The topical composition may be delivered and applied to a surface, thereby improving the appearance of the surface. This composition can reduce the visibility of textural imperfections, such as fine lines, wrinkles, and scars, as well as color imperfections, such as age spots and blemishes. The treatment of inorganic particles on the surface of macroscopic particles can be achieved by three methods, including mechanofusion, physical adsorption, and pre-emulsification into macroscopic particles. This invention also relates to methods of using the composition in a cosmetic or dermatological application, as well as, in an industrial application.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 18, 2009
    Applicant: Avon Products, Inc.
    Inventors: Prithwiraj Maitra, John C. Brahms, John R. Glynn, JR., Michael J. Fair, Steven E. Brown
  • Publication number: 20090148393
    Abstract: The present invention relates to a system of cosmetic and dermatological compositions and methods for treating and improving the aesthetic appearance of a biological surface by altering the optical properties of the biological surface, thereby resulting in a natural, flawless appearance. The compositions of the invention may be topically applied to the biological surface, including but not limited to skin, in an amount effective in improving the aesthetic and natural appearance of the biological surface.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 11, 2009
    Applicant: Avon Products, Inc.
    Inventors: Prithwiraj Maitra, Steven Carlo
  • Publication number: 20080279797
    Abstract: A cosmetic composition for caring for and/or making up the skin, lips and/or body in the form of a film, which is non-transferable, long-lasting with a comfortable feeling of use to consumers over long periods of wear time. The composition contains graftable POSS which forms a film when it cures in situ. The invention also relates to using such film for preparing a cosmetic composition and a makeup process and makeup kit comprising the product.
    Type: Application
    Filed: May 9, 2007
    Publication date: November 13, 2008
    Inventors: Prithwiraj Maitra, Tao Zheng
  • Publication number: 20080233058
    Abstract: Oral care compositions comprising: a) an oral care active; and b) an acrylic film forming polymer. In various embodiments, such polymers comprise monomeric units such as acrylic acid, methacrylic acid, acrylates, and combinations thereof. In one embodiment, the film forming polymer comprises a copolymer of a first monomeric unit selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, with a second monomeric unit selected from the group consisting of acrylates, acrylamides, acetates, and combinations thereof. In various embodiments, the polymer is a terpolymer comprising a combination of the second monomeric units. Preferably, the composition additionally comprises a lower alcohol, such as ethanol. In various embodiments, the oral care active comprises a whitening material, such as a peroxide.
    Type: Application
    Filed: June 3, 2008
    Publication date: September 25, 2008
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventors: Prithwiraj Maitra, Lynette Zaidel, Suman K. Chopra, Guisheng Pan, Michael Prencipe, Syed Ibrahim
  • Publication number: 20080220026
    Abstract: The present invention relates to compositions and methods for treating and improving the aesthetic appearance of a biological surface by altering the optical properties of the biological surface, thereby resulting in a natural appearance. The compositions of the invention may be topically applied to the biological surface, including but not limited to skin, in an amount effective in improving the aesthetic and natural appearance of the biological surface.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Prithwiraj Maitra, John C. Brahms
  • Publication number: 20070253916
    Abstract: A composite comprising a silicone compound sorbed onto a porous cross-linked polymer. This composition can be included in an oral care composition and inhibit bacterial adhesion on an oral surface.
    Type: Application
    Filed: April 24, 2007
    Publication date: November 1, 2007
    Inventors: Prithwiraj Maitra, Suman K. Chopra, Harsh M. Trivedi, Sayed Ibrahim, Tao Xu, Michael Prencipe
  • Publication number: 20070142521
    Abstract: Compositions and methods for the formation of physically cross-linked thermoplastic elastomeric films are disclosed. The disclosed films are long-lasting, flexible, transfer resistant, and water-proof. The film-forming compositions comprise a thermoplastic elastomer, a tackifier resin, and a volatile solvent useful for formulating cosmetics, personal care products, and pharmaceutical compositions.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 21, 2007
    Inventors: John Brahms, Prithwiraj Maitra, Tao Zheng
  • Publication number: 20070142599
    Abstract: Compositions and methods for the in situ formation of cross-linked organosiloxane films are disclosed. The disclosed films are long-lasting, flexible, transfer-resistant, water-resistant and oil-resistant. The film-forming compositions generally comprise alkoxy-terminated organosiloxane polymers and a catalyst and are useful for formulating cosmetics and personal care products.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 21, 2007
    Inventors: Tao Zheng, Derrick McKie, John Brahms, Prithwiraj Maitra
  • Publication number: 20070140991
    Abstract: Compositions and methods are provided for forming a film on a biological surface which are long-lasting, flexible, transfer-resistant, water-proof, and comfortable to the wearer. The compositions generally comprise pressure sensitive adhesive polymers, optionally with the addition of plasticizers, tackifiers, or other film formers, and are useful for formulating cosmetics and personal care products.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 21, 2007
    Inventors: Prithwiraj Maitra, William McNamara, John Brahms, Derrick McKie, Tao Zheng
  • Publication number: 20070142575
    Abstract: Compositions and methods for the in situ formation of hydrosilylation (addition) cross-linked organosiloxane films are disclosed. The disclosed films are long-lasting, flexible, transfer-resistant, and water-proof. The film-forming compositions generally comprise alkoxy-terminated organosiloxane polymers and a catalyst and are useful for formulating cosmetics and personal care products.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 21, 2007
    Inventors: Tao Zheng, Derrick McKie, John Brahms, Prithwiraj Maitra
  • Publication number: 20060292088
    Abstract: Compositions for altering the color of teeth, including tooth-coating compositions comprising a colorant and an acrylate polymer. Colorants among those useful herein include whiteness-imparting particulate materials, such as hydroxyapatite.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 28, 2006
    Inventors: Prithwiraj Maitra, Suman Chopra, Sayed Ibrahim, Eugene Pashkovski, Michael Prencipe
  • Patent number: 7118732
    Abstract: Tooth-imparting whiteness to fluids comprising a particulate whiteness-imparting particles such as hydroxyapatite and an organosiloxane polymer are disclosed. Methods of use of the fluids are also disclosed.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: October 10, 2006
    Assignee: Colgate-Palmolive Company
    Inventors: Sayed Ibrahim, Prithwiraj Maitra, Suman K. Chopra, Eugene Pashkovski, Michael Prencipe
  • Publication number: 20060024246
    Abstract: Oral care compositions comprising: a) an oral care active; and b) an acrylic film forming polymer. In various embodiments, such polymers comprise monomeric units such as acrylic acid, methacrylic acid, acrylates, and combinations thereof. In one embodiment, the film forming polymer comprises a copolymer of a first monomeric unit selected from the group consisting of acrylic acid, methacrylic acid, and combinations thereof, with a second monomeric unit selected from the group consisting of acrylates, acrylamindes, acetates, and combinations thereof. In various embodiments, the polymer is a terpolymer comprising a combination of the second monomeric units. Preferably, the composition additionally comprises a lower alcohol, such as ethanol. In various embodiments, the oral care active comprises a whitening material, such as a peroxide.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 2, 2006
    Inventors: Prithwiraj Maitra, Lynette Zaidel, Suman Chopra, Guisheng Pan, Michael Prencipe, Sayed Ibrahim
  • Publication number: 20050287084
    Abstract: Tooth-imparting whiteness to fluids comprising a particulate whiteness-imparting particles such as hydroxyapatite and an organosiloxane polymer are disclosed. Methods of use of the fluids are also disclosed.
    Type: Application
    Filed: May 10, 2004
    Publication date: December 29, 2005
    Inventors: Sayed Ibrahim, Prithwiraj Maitra, Suman Chopra, Eugene Pashkovski, Michael Prencipe