Patents by Inventor Robert Ya-Lin Pan

Robert Ya-Lin Pan 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: 20040001797
    Abstract: Antimicrobial compositions that provide enhanced immediate and residual anti-viral and antibacterial efficacy against rhinovirus, rotavirus, Gram-positive bacteria, Gram-negative bacteria and combinations thereof. More specifically, antimicrobial compositions comprising an organic acid or organic acid mixture, a specific short-chain anionic surfactant with branching or a large head group, and, optionally, a calcium ion scavenger and/or anti-foam agent. Further, products incorporating the antimicrobial compositions of the present invention and methods of using the antimicrobial compositions and products disclosed herein.
    Type: Application
    Filed: June 21, 2002
    Publication date: January 1, 2004
    Inventors: Abel Saud, Robert Ya-Lin Pan, Rosa Laura Moese
  • Publication number: 20030235550
    Abstract: Antimicrobial compositions that provide enhanced immediate and residual anti-viral and antibacterial efficacy against rhinovirus, rotavirus, Gram-positive bacteria, Gram-negative bacteria and combinations thereof. More specifically, antimicrobial compositions comprising an organic acid or organic acid mixture, a specific short-chain anionic surfactant with branching or a large head group, and, optionally, a calcium ion scavenger and/or anti-foam agent. Further, products incorporating the antimicrobial compositions of the present invention and methods of using the antimicrobial compositions and products disclosed herein.
    Type: Application
    Filed: October 2, 2002
    Publication date: December 25, 2003
    Inventors: Robert Ya-Lin Pan, Rosa Laura Moese, Abel Saud
  • Patent number: 6239087
    Abstract: Detergent compositions containing certain acetals or ketals which hydrolyze upon exposure of surfaces washed in solution of said compositions to a reduction in pH, thereby releasing a fragrance which is characteristic of one or more of the hydrolysis products. The acetals and ketals themselves also form part of the invention; they have a molecular weight of at least about 350; a ClogP of about 4, and a half-life of less than 60 minutes when measured at pH=0 by the pro-fragrant hydrolysis test.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: May 29, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Hsiang Kuen Mao, Joseph Paul Morelli, Henry Cheng Na, Robert Ya-Lin Pan, Mark Robert Sivik
  • Patent number: 6096704
    Abstract: The present invention is directed to a pro-fragrance compound selected from the group consisting of an acetal, a ketal, and mixtures thereof, wherein at least one of a parent aldehyde, ketone, or alcohol of the pro-fragrance acetal or ketal is a fragrance compound, having a ClogP of less than about 4. The ClogP is the logarithm to the base 10 of the octanol/water partition coefficient of the pro-fragrances. Further disclosed are detergent compositions comprising the pro-fragrance compound of the present invention and detersive surfactants.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: August 1, 2000
    Inventors: Lonnie Liddell Bryant, Jr., Robert Ya-Lin Pan
  • Patent number: 6048830
    Abstract: A laundry agent delivery particle is provided. The particle comprises: a) a porous carrier selected from the group consisting of Zeolite X, Zeolite Y and mixtures thereof, the porous carrier including a number of pore openings; and b) a release barrier having at least one deliverable agent residue and at least one size enlarging agent residue, the deliverable agent residue being incorporated into the porous carrier, the size enlarging agent residue having a hydrophilic portion and a hydrophobic portion, the hydrophilic portion incorporated into the porous carrier and in conjunction with the deliverable agent residue forming the release barrier wherein the cross-sectional area of the release barrier within the porous carrier is larger than the cross-sectional area of the pore openings of the porous carrier. Preferred size enlarging agents include those having a fatty chain or alcohol chain in the hydrophobic portion, such as nonionic surfactants.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: April 11, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Lois Sara Gallon, William Richard Mueller, Robert Ya-Lin Pan
  • Patent number: 5843878
    Abstract: Detergent compositions comprising anionic ethoxylated or propoxylated hydroxy ethane and propane sulfonate, NaO.sub.3 SCH.sub.2 CH.sub.2 CH.sub.2 --O(CH.sub.2 CH.sub.2 O).sub.n -- end-capped esters useful as soil release agents. The esters further contain terephthalate units, oxy-1,2-alkyleneoxy units (oxyethyleneoxy units preferred), and sulfoisophthalate units.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: December 1, 1998
    Assignee: Procter & Gamble Company
    Inventors: Eugene Paul Gosselink, Robert Ya-Lin Pan, Robin Gibson Hall
  • Patent number: 5691303
    Abstract: Granular detergent compositions comprise conventional ingredients and a perfume delivery system which comprises Type X or Type Y Zeolites having a perfume releasably adsorbed within their pores, and a barrier matrix comprising a fluid polyol or diol which is insoluble with the perfume and a solid polyol containing more than three hydroxyl moieties. Methods of depositing said perfume onto fabric surfaces are disclosed.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: November 25, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Robert Ya-Lin Pan, Jing-Feng You, Gregory Stephen Caravajal, Sharon Anne Graves, William Richard Mueller