Patents Represented by Attorney, Agent or Law Firm Donald E. Hasse
  • Process of coloring stabilized bleach activator extrudates
    Patent number: 4997590
    Abstract: This invention relates to a process for applying water-soluble dye or water-dispersible pigment to stabilized bleach activator extrudates in a manner which avoids agglomeration and allows even coating of the bleach activator extrudates. This is accomplished by adding water-soluble hydratable material and the dye or pigment to an aqueous solution, and then distributing the aqueous solution on the bleach activator extrudates. The bleach activator extrudates comprise specific peroxygen bleach activators and select binder materials. This invention also relates to colored bleach activator extrudates made according to this process.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: March 5, 1991
    Assignee: The Procter & Gamble Company
    Inventor: Ernie Bowling
  • Liquid automatic dishwashing detergent compositions containing bleach-stable nonionic surfactant
    Patent number: 4988452
    Abstract: Thickened aqueous automatic dishwashing detergent compositions comprising certain bleach-stable capped polyalkylene oxide block copolymer nonionic surfactants.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: January 29, 1991
    Assignee: The Procter & Gamble Company
    Inventors: George C. Kinstedt, Sherri L. Myers
  • Stable liquid detergents containing anionic surfactant and monosulfonated brightener
    Patent number: 4978475
    Abstract: Stable isotropic liquid laundry detergents containing anionic surfactant and monosulfonated brightener to reduce brightener staining of fabrics. Monosulfonated naphthotriazolyl stilbene brighteners are preferred.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 18, 1990
    Assignee: The Procter & Gamble Company
    Inventor: Linda A. Halas
  • Stable liquid detergent containing anionic surfactant and monosulfonated brightener
    Patent number: 4970029
    Abstract: Stable isotropic liquid laundry detergents containing anionic surfactant and monosulfonated brightener to reduce brightener staining of fabrics. Monosulfonated naphthotriazolyl stilbene brighteners are preferred.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: November 13, 1990
    Assignee: The Procter & Gamble Company
    Inventor: Linda A. Halas
  • Process for spray-drying detergent compositions
    Patent number: 4963226
    Abstract: A method is provided for spray-drying, large volumes of a detergent slurry in a spray-drying tower which includes spraying at least a portion of the slurry, cocurrently with air having a specified temperature and velocity range, through uniformly spaced atomizing nozzles into a cylindrically shaped drying zone. Any remaining balance of the slurry is sprayed countercurrently into the drying zone at higher levels in the spray tower.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: October 16, 1990
    Assignee: The Procter & Gamble Company
    Inventor: Harry R. Chamberlain
  • Method for the production of alkenyl-succinic anhydrides
    Patent number: 4956478
    Abstract: This method which involves reacting maleic anhydride and .alpha.-olefins in an autoclave at about 200.degree.-250.degree. C. gives particularly good results and produces alkenyl-succinic anhydrides which need not be purified by distillation when using, as the starting .alpha.-olefins, dodecene containing a substantial amount of tetradecene.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: September 11, 1990
    Assignee: The Procter & Gamble Company
    Inventors: Emanuel P. Fakoukakis, Sorin V. Mustatea, Gunter Bellmann
  • Liquid automatic dishwashing compositions having an optimized thickening system
    Patent number: 4941988
    Abstract: Disclosed are liquid automatic dishwashing detergent compositions having an optimized thickening system. The thickening system is based on a polyacrylate polymer thickener and an alkali metal silica colloid having dispersed therein an alkali metal aluminate.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: July 17, 1990
    Assignee: The Procter & Gamble Company
    Inventor: Rodney M. Wise
  • Liquid automatic dishwashing compositions compounds providing glassware protection
    Patent number: 4933101
    Abstract: Disclosed are liquid automatic dishwashing detergent compositions containing an insoluble inorganic zinc salt useful for inhibition of glassware corrosion in the dishwasher. These compositions are particularly desirable because use of them in the dishwasher does not result in precipitation of insolubles on the dishware or dishwasher parts.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: June 12, 1990
    Assignee: The Procter & Gamble Company
    Inventors: William A. Cilley, Rodney M. Wise
  • Process for forming flakes
    Patent number: 4927557
    Abstract: Flakes of a hydrophilic solid organic material, e.g., polyethylene glycol are formed from a melt of said solid organic material on a belt cooler. The process is improved by wetting the belt cooler with water and/or an organic, low molecular weight, hydrophilic liquid to maintain contact between flake and belt during rapid cooling.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: May 22, 1990
    Assignee: The Proctor & Gamble Company
    Inventors: Jack W. Revis, John A. Sagel, Daniel I. Ostendorf
  • Granular automatic dishwasher detergent composition providing glassware protection containing insoluble zinc compound
    Patent number: 4917812
    Abstract: Disclosed are granular automatic dishwashing detergent compositions containing an insoluble inorganic zinc salt useful for inhibition of glassware corrosion in the dishwasher. These compositions are particularly desirable because use of them in the dishwasher does not result in precipitation of zinc insolubles on the dishware or dishwasher parts.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: April 17, 1990
    Assignee: The Procter & Gamble Company
    Inventor: William A. Cilley
  • Rinse additive compositions providing glassware protection comprising insoluble zinc compounds
    Patent number: 4908148
    Abstract: Disclosed are rinse additive compositions containing an insoluble inorganic zinc salt useful for inhibition of glassware corrosion caused by automatic dishwashing detergents in the dishwasher. These compositions are particularly desirable because use of them in the dishwasher does not result in precipitation of zinc insolubles on the dishware or dishwasher parts.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: March 13, 1990
    Assignee: The Procter & Gamble Company
    Inventors: Gregory S. Caravajal, Gretchen R. Hatfield
  • Liquid detergent composition containing polymeric surfactant
    Patent number: 4904359
    Abstract: High sudsing liquid detergent compositions contain anionic surfactant and polymeric surfactant which contains ether linkages, the anionic surfactant forming stable complexes with the polymeric surfactant for improved grease handling.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: February 27, 1990
    Assignee: The Procter & Gamble Company
    Inventors: Eugene J. Pancheri, Young S. Oh, Rodney M. Wise
  • Detergent compositions containing ethoxylated amines having clay soil removal/anti-redeposition properties
    Patent number: 4891160
    Abstract: Detergent compositions which comprise from about 0.05 to about 95% by weight of a water-soluble ethoxylated amine having clay soil removal/anti-redeposition properties. These compounds are selected from ethoxylated monoamines, ethoxylated diamines, ethoxylated polyamines, ethoxylated amine polymers and mixtures thereof. In addition to the ethoxylated amines, the detergent compositions further comprise from about 1 to about 75% by weight of a nonionic, anionic, ampholytic, zwitterionic or cationic detergent surfactant, or mixture thereof. In addition to these detergent surfactants, the detergent composition can optionally comprise from 0 to about 80% by weight of a detergent builder.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: January 2, 1990
    Assignee: The Proctor & Gamble Company
    Inventor: James M. Vander Meer
  • Liquid automatic dishwashing compositions containing metal salts of hydroxy fatty acids providing silver protection
    Patent number: 4859358
    Abstract: Thickened aqueous automatic dishwashing detergent compositions containing optional bleach-stable surfactant, detergency builder, hypochlorite bleach (to yield available chlorine), a thickening agent and metal salts of long chain hydroxy fatty acids. The compositions have a yield value between 50 and 350 dynes/cm.sup.2 and inhibit tarnishing of sterling and silver-plated flatware.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: August 22, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Steven M. Gabriel, Brian J. Roselle
  • Bleaching compounds and compositions comprising fatty peroxyacids salts thereof and precursors therefor having amide moieties in the fatty chain
    Patent number: 4852989
    Abstract: This invention relates to bleaching compounds and compositions that provide effective and efficient surface bleaching of textiles over a wide range of bleach solution temperatures. The bleaching compounds of the invention yield a peroxyacid with a polar amide link in the hydrophobic chain when used in the bleaching compositions. In a preferred embodiment, the bleaching compositions of the invention are also detergent compositions.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: August 1, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Michael E. Burns, Frederick E. Hardy
  • Bleach activator compositions containing an antioxidant
    Patent number: 4853143
    Abstract: Bleach activator, bleach and detergent compositions comprising:(a) a peroxyacid bleach precursor having the general formula IAc--L Iwherein Ac is the acyl moiety of an organic carboxylic acid comprising an optionally substituted, linear or branched C.sub.6 -C.sub.20 alkyl or alkenyl moiety or a C.sub.6 -C.sub.20 alkyl-substituted aryl moiety and L is a leaving group, the conjugate acid of which has a pKa in the range from 4 to 13, and(b) an antioxidant.The compositions combine excellent stability, substrate-safety, water-dispersibility, granulometry and detergency performance.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: August 1, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Frederick E. Hardy, Frank Cselik, Alastair J. Pretty, Kenneth Young, Gerald Scott
  • Stable heavy duty liquid detergent compositions which contain a softener and antistatic agent
    Patent number: 4844824
    Abstract: Heavy duty liquid laundry detergent compositions which clean, soften and provide static control, and which comprise: (1) sulfated (optionally ethoxylated) alcohol anionic surfactant, (2) ion pair complex, (3) cumene, xylene, or toluene sulfonate, (4) smectite-type clay, and (5) ethoxylated nonionic surfactant. The compositions are in the form of stable, homogeneous suspensions which have a low viscosity, a near-neutral pH, and a specified yield value. Such compositions impart fabric care benefits through-the-wash without significantly impairing cleaning performance.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: July 4, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Robert Mermelstein, Ronald L. Jacobsen
  • Thickened aqueous compositions with suspended solids
    Patent number: 4824590
    Abstract: Aqueous shear thinning compositions comprising a continuous aqueous phase and suspended solid particles are stabilized by incorporating gas in the form of very small bubbles to adjust the overall specific gravity of the composition to within from about 5% more than to about 10% less than the specific gravity of said aqueous phase.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: April 25, 1989
    Assignee: The Procter & Gamble Company
    Inventor: Brian J. Roselle
  • Particles containing ammonium salts or other chlorine scavengers for detergent compositions
    Patent number: 4810413
    Abstract: Granular detergent compositions contain a low level of ammonium salt or salt of specific anion chlorine scavenger which is preferably protected in a particle. Such salts protect enzymes in the wash process. The preferred particles can also comprise, e.g., a suds-controlling silicone material which is substantially removed from contact with the surfactant component or alkaline component of the composition. The particles preferably use, e.g., a polyethylene glycol carrier, with preferably a small amount of fatty acid, in an irregularly shaped particle having a minimum dimension of at least about 0.05 cm.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: March 7, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Eugene J. Pancheri, Eugene S. Sadlowski, Joseph M. Wong, Vincent C. Hand, Ann M. Sack
  • Controlled sudsing stable isotropic liquid detergent compositions
    Patent number: 4798679
    Abstract: Stable isotropic liquid detergent compositions containing a particular silicone suds controlling agent, a sudsing detergent surfactant and water. Such compositions can be prepared if a suitable dispersing agent is premixed with the suds controlling agent prior to incorporation in the liquid detergent composition.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: January 17, 1989
    Assignee: The Procter & Gamble Co.
    Inventors: Artemio Castro, Michael S. Showell