Patents by Inventor David T. Callaghan

David T. Callaghan 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: 6632420
    Abstract: A clear personal care composition includes water, a volatile silicone, and a silicone polyether having a molecular weight greater than 1000 and an HLB greater than 4. The composition may be, for example, an antiperspirant or deodorant composition.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: October 14, 2003
    Assignee: The Gillette Company
    Inventors: Raymond W. Cen, David T. Callaghan
  • Patent number: 5770186
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: June 23, 1998
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal
  • Patent number: 5589196
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: December 31, 1996
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal
  • Patent number: 5486347
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 23, 1996
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal
  • Patent number: 5368842
    Abstract: The present invention embraces an aerosol antiperspirant composition which comprises a suspension of about 5 to 15% high efficacy aluminum salt in powder form in about 15 to 35% volatile silicone and about 40 to 80% liquefied hydrocarbon propellant with about 0.7 to 1.5% hydrophobic colloidal silica suspending agent and about 0.15 to 0.35% hydrophilic colloidal silica suspending agent. The composition of the present invention has superior antiperspirant efficacy and avoids the use of materials which have an adverse effect on efficacy, namely oil soluble emollient esters such as isopropyl myristate and polar agents such as ethanol.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: November 29, 1994
    Assignee: The Gillette Company
    Inventors: Barry P. Lederman, David T. Callaghan
  • Patent number: 5298640
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: March 29, 1994
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal
  • Patent number: 5114705
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromatography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: May 19, 1992
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal
  • Patent number: 4775528
    Abstract: A composition of zirconyl hydroxy chloride and aluminum chlorhydroxide in stable solid form having improved antiperspirant efficacy when dissolved in water is made by heating a 2-20% by weight aqueous solution containing at least the aluminum chlorhydroxide component of the composition at a temperature of at least 50.degree. C. until the ratio of the height of peak 4 at Kd=0.7 to that of peak 3 at Kd=0.5 as measured by gel permeation chromotography on cross-linked dextran is at least 2:1, then subjecting the solution to rapid drying to solid form.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: October 4, 1988
    Assignee: The Gillette Company
    Inventors: David T. Callaghan, Alan M. Phipps, Stephen J. Provancal