Patents by Inventor Yan-Fei Shen

Yan-Fei Shen 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: 20100104517
    Abstract: An anhydrous aerosol antiperspirant composition comprising a concentrate comprising at least about 40%, by weight of the concentrate, of an alcohol; an antiperspirant active dissolved in the alcohol; and at least one volatile silicone oil that is miscible in the alcohol and antiperspirant active solution and that has a viscosity of less than 10 centistokes at 25° C.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 29, 2010
    Inventor: Yan-fei Shen
  • Patent number: 7157077
    Abstract: The present invention relates to enhanced efficacy antiperspirant salts containing strontium and an amino acid or a hydroxy acid and particularly to stabilized aqueous solutions of such salts. The present invention also embraces methods of making these antiperspirant salts and solutions and compositions containing same.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: January 2, 2007
    Assignee: The Gillette Company
    Inventor: Yan-Fei Shen
  • Patent number: 6991780
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions that have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. These salts also typically exhibit an HPLC peak 5 area content of about 33% or more, preferably at least 45%, more preferably at least 50%, most preferably at least 55%. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4, preferably at least 0.7. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: January 31, 2006
    Assignee: The Gillette Company
    Inventors: Angel L. Carrillo, Richard Oryszczak, Yan-Fei Shen
  • Patent number: 6942850
    Abstract: Disclosed is a liquid aqueous alcoholic antiperspirant composition comprising, by weight, about 10% to about 60% ethanol, water, and about 8% to about 22% (USP) antiperspirant salt dissolved in the composition, wherein said antiperspirant salt comprises a calcium enhanced aluminum-zirconium chlorohydrate. The composition may optionally include a thickening agent to increase the viscosity of the solution. A more viscous solution is less prone to dripping from the skin or leaking from the dispensing container. Ideally, the composition will provide an absolute sweat reduction significantly higher than currently available antiperspirant products, typically at least 60% sweat reduction or higher.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: September 13, 2005
    Assignee: The Gillette Company
    Inventors: Craig M. Coe, Yan-Fei Shen
  • Publication number: 20050196366
    Abstract: The present invention relates to enhanced efficacy antiperspirant salts containing strontium and an amino acid or a hydroxy acid and particularly to stabilized aqueous solutions of such salts. The present invention also embraces methods of making these antiperspirant salts and solutions and compositions containing same.
    Type: Application
    Filed: April 27, 2005
    Publication date: September 8, 2005
    Inventor: Yan-Fei Shen
  • Patent number: 6923952
    Abstract: Disclosed are enhanced efficacy antiperspirant compositions containing a strontium salt and/or a calcium salt. In particular, there is disclosed an antiperspirant composition comprising a dermatologically acceptable carrier vehicle, about 8% to about 22% (USP) of an aluminum-zirconium chlorohydrate-gly antiperspirant salt, wherein the antiperspirant salt has an HPLC peak 5 area of at least 33%, and about 0.5% to about 15%, preferably about 1% to about 6%, by weight, of a water soluble salt selected from the group consisting of a water soluble strontium salt, a water soluble calcium salt and a mixture thereof. It has been found that the inclusion of a strontium salt and/or a calcium salt boosts the efficacy of a high peak 5 antiperspirant salt. As a preferred feature, the antiperspirant salt and the water soluble salt are dissolved in at least a portion of the carrier vehicle.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: August 2, 2005
    Assignee: The Gillette Company
    Inventors: Jan L. Allen, Yan-Fei Shen
  • Patent number: 6911195
    Abstract: Disclosed are antiperspirant compositions, particularly clear gel antiperspirant compositions, that are water-in-silicone oil emulsions. The emulsion includes a water phase, typically comprising about 65% to about 95% by weight of the emulsion, and a silicone oil phase, typically comprising about 5% to about 35% by weight of the emulsion. The water phase includes an antiperspirant salt dissolved therein, typically in an amount of about 8% to about 30% by weight of the emulsion, the antiperspirant salt comprising a calcium enhanced aluminum-zirconium chlorohydrate. The silicone oil phase contains less than about 5% by weight of the emulsion of a non-volatile oil and includes about 2% to about 25% by weight of the emulsion of a volatile linear silicone.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: June 28, 2005
    Assignee: The Gillette Company
    Inventors: Tuan M. Vu, Yan-Fei Shen
  • Patent number: 6902723
    Abstract: The present invention relates to enhanced efficacy antiperspirant salts containing strontium and an amino acid or a hydroxy acid and particularly to stabilized aqueous solutions of such salts. The present invention also embraces methods of making these antiperspirant salts and solutions and compositions containing same.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: June 7, 2005
    Assignee: The Gillette Company
    Inventor: Yan-Fei Shen
  • Publication number: 20050036968
    Abstract: The present invention relates to enhanced efficacy antiperspirant salts containing strontium and an amino acid or a hydroxy acid and particularly to stabilized aqueous solutions of such salts. The present invention also embraces methods of making these antiperspirant salts and solutions and compositions containing same.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 17, 2005
    Inventor: Yan-Fei Shen
  • Publication number: 20050036967
    Abstract: Disclosed are enhanced efficacy antiperspirant compositions containing a strontium salt and/or a calcium salt. In particular, there is disclosed an antiperspirant composition comprising a dermatologically acceptable carrier vehicle, about 8% to about 22% (USP) of an aluminum-zirconium chlorohydrate-gly antiperspirant salt, wherein the antiperspirant salt has an HPLC peak 5 area of at least 33%, and about 0.5% to about 15%, preferably about 1% to about 6%, by weight, of a water soluble salt selected from the group consisting of a water soluble strontium salt, a water soluble calcium salt and a mixture thereof It has been found that the inclusion of a strontium salt and/or a calcium salt boosts the efficacy of a high peak 5 antiperspirant salt. As a preferred feature, the antiperspirant salt and the water soluble salt are dissolved in at least a portion of the carrier vehicle.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 17, 2005
    Inventors: Jan Allen, Yan-Fei Shen
  • Publication number: 20050036969
    Abstract: Disclosed is a liquid aqueous alcoholic antiperspirant composition comprising, by weight, about 10% to about 60% ethanol, water, and about 8% to about 22% (USP) antiperspirant salt dissolved in the composition, wherein said antiperspirant salt comprises a calcium enhanced aluminum-zirconium chlorohydrate. The composition may optionally include a thickening agent to increase the viscosity of the solution. A more viscous solution is less prone to dripping from the skin or leaking from the dispensing container. Ideally, the composition will provide an absolute sweat reduction significantly higher than currently available antiperspirant products, typically at least 60% sweat reduction or higher.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 17, 2005
    Inventors: Craig Coe, Yan-Fei Shen
  • Publication number: 20040136934
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions that have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. These salts also typically exhibit an HPLC peak 5 area content of about 33% or more, preferably at least 45%, more preferably at least 50%, most preferably at least 55%. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4, preferably at least 0.7. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.
    Type: Application
    Filed: November 3, 2003
    Publication date: July 15, 2004
    Applicant: The Gillette Company
    Inventors: Angel L. Carrillo, Richard Oryszczak, Yan-Fei Shen
  • Publication number: 20040115147
    Abstract: Disclosed are antiperspirant compositions, particularly clear gel antiperspirant compositions, that are water-in-silicone oil emulsions. The emulsion includes a water phase, typically comprising about 65% to about 95% by weight of the emulsion, and a silicone oil phase, typically comprising about 5% to about 35% by weight of the emulsion. The water phase includes an antiperspirant salt dissolved therein, typically in an amount of about 8% to about 30% by weight of the emulsion, the antiperspirant salt comprising a calcium enhanced aluminum-zirconium chlorohydrate. The silicone oil phase contains less than about 5% by weight of the emulsion of a non-volatile oil and includes about 2% to about 25% by weight of the emulsion of a volatile linear silicone.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Applicant: The Gillette Company
    Inventors: Tuan M. Vu, Yan-Fei Shen
  • Patent number: 6726901
    Abstract: Disclosed is an anhydrous topical antiperspirant composition comprising a dermatologically acceptable carrier and a perspiration reducing effective amount of a particulate antiperspirant salt suspended in the carrier. The antiperspirant salt comprises an aluminum-zirconium chlorohydrate having a metal to chloride ratio between about 0.9 and about 1.3. The composition also includes, separate from the antiperspirant salt, a stabilizing basic material in an amount sufficient to prevent degradation of the antiperspirant composition or to minimize acid odor. Also disclosed is a method of reducing perspiration from human skin by applying the aforementioned topical composition.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: April 27, 2004
    Assignee: The Gillette Company
    Inventors: Yuling Yin, Jayant N. Sane, Yan-Fei Shen
  • Patent number: 6663854
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium chlorohydrate antiperspirant salts having a metal (Al+Zr) to chloride ratio of about 0.9 to about 1.2, preferably about 0.9 to about 1.1, most preferably about 0.9 to about 1.0. To achieve the highest possible antiperspirant efficacy, these salts are made with or include a zirconium hydroxychloride of the formula Zr(OH)4−bClb wherein b is about 2.8 to about 4.0, preferably about 3.2 to about 4.0, so that the Zr:Cl ratio in said zirconium hydroxychloride is about 0.36 to about 0.25, preferably about 0.31 to about 0.25. The present invention also embraces methods of making such antiperspirant salts and aqueous solutions of such antiperspirant salts. The present invention further embraces topical compositions comprising a dermatologically acceptable carrier and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt as described above.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: December 16, 2003
    Inventors: Yan-Fei Shen, Richard Oryszczak, Angel L. Carrillo
  • Patent number: 6649152
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions which exhibit an HPLC peak 5 area content of about 33% or more, preferably at least 45%, more preferably at least 50%, most preferably at least 55%. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4, preferably at least 0.7. The aforementioned salt compositions will preferably have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: November 18, 2003
    Assignee: The Gillette Company
    Inventors: Angel L. Carrillo, Richard Oryszczak, Yan-Fei Shen
  • Publication number: 20030211060
    Abstract: Disclosed is an anhydrous topical antiperspirant composition comprising a dermatologically acceptable carrier and a perspiration reducing effective amount of a particulate antiperspirant salt suspended in the carrier. The antiperspirant salt comprises an aluminum-zirconium chlorohydrate having a metal to chloride ratio between about 0.9 and about 1.3. The composition also includes, separate from the antiperspirant salt, a stabilizing basic material in an amount sufficient to prevent degradation of the antiperspirant composition or to minimize acid odor. Also disclosed is a method of reducing perspiration from human skin by applying the aforementioned topical composition.
    Type: Application
    Filed: May 9, 2002
    Publication date: November 13, 2003
    Applicant: The Gillette Company
    Inventors: Yuling Yin, Jayant N. Sane, Yan-Fei Shen
  • Publication number: 20030021757
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions which exhibit an HPLC peak 5 area content of about 33% or more, preferably at least 45%, more preferably at least 50%, most preferably at least 55%. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4, preferably at least 0.7. The aforementioned salt compositions will preferably have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.
    Type: Application
    Filed: May 3, 2002
    Publication date: January 30, 2003
    Applicant: The Gillette Company
    Inventors: Angel L. Carrillo, Richard Oryszczak, Yan-Fei Shen
  • Patent number: 6436381
    Abstract: Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions which exhibit an HPLC peak 5 area content of about 33% or more. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4. The aforementioned salt compositions will preferably have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: August 20, 2002
    Assignee: The Gillette Company
    Inventors: Angel L. Carrillo, Richard Oryszczak, Yan-Fei Shen
  • Patent number: 6245325
    Abstract: The present invention relates to enhanced efficacy antiperspirant salts containing calcium and an amino acid or a hydroxy acid and particularly to stabilized aqueous solutions of such salts. The present invention also embraces methods of making these antiperspirant salts and solutions and compositions containing same.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: June 12, 2001
    Assignee: The Gillette Company
    Inventor: Yan-Fei Shen