Patents by Inventor Benjamin E. Chapman

Benjamin E. Chapman 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: 5688982
    Abstract: An improved, no -bleach process for the production of sulfonated fatty acid alkyl ester surfactants containing sulfonated fatty acid alkyl esters and less than 10% of sulfonated fatty acid disalt, fatty acid salt (soap), and fatty acid alkyl ester impurities, said process comprising sulfonating fatty acid alkyl esters, reacting with a C.sub.1 to C.sub.8 alcohol, and continuously neutralizing with an alkoxide in a substantially anhydrous medium of a C.sub.1 to C.sub.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: November 18, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Vajih A. Khan, Michael T. Creedon, Benjamin E. Chapman
  • Patent number: 5536435
    Abstract: A process for preparing particulate bodies containing a substantially water-insoluble organic peroxyacid compound, which process does not include a solidification step, including an early step of intimately mixing substantially water-insoluble peroxyacid compound with a peroxyacid-stable, water-soluble surfactant.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: July 16, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Benjamin E. Chapman, Steven M. Gabriel, Jeffrey E. Boucher, Daniel L. Strauss
  • Patent number: 5534195
    Abstract: Liquid alkyl lactam bleach activators are intimately mixed with a water-soluble surfactant and a thickener to form a bleach activator particle with good solubility, which perhydrolyzes well, and which is non-sticky and free flowing. Optionally, but preferably, the particles will further comprise binders and filler materials. Novel activator compositions comprising polyhydroxy fatty acid amides plus lactam activators are disclosed.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: July 9, 1996
    Assignee: The Procter & Gamble Co.
    Inventors: Benjamin E. Chapman, Michael T. Creedon
  • Patent number: 5534196
    Abstract: Acyl lactam bleach activator is intimately mixed with a water-soluble surfactant to form a bleach activator particle, with good solubility and which perhydrolyzes well. Said process does not include a drying step. Optionally, but preferably, the particle will further comprise binders and a crystalline material.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: July 9, 1996
    Assignee: The Procter & Gamble Co.
    Inventors: Benjamin E. Chapman, Michael T. Creedon
  • Patent number: 5429773
    Abstract: A process for improving the color and purity of dark-colored potassium or magnesium alkyl ester sulfonate surfactant compositions, and particularly alpha-sulfo fatty acid methyl ester compositions, without the need for bleaching or other process steps. The process comprises the steps of (1) forming a mixture comprising (i) an alkyl ester sulfonate surfactant composition containing impurities including dark-colored impurities, organic and inorganic salts, and disalts, and (ii) water, and (2) separating the ester sulfonate surfactant from the mixture. The process may further comprise step (3) recovering the alkyl ester sulfonate surfactant. Methyl ester sulfonate surfactant compositions are most preferred. After processing in accordance with the invention, the alkyl ester sulfonate surfactant composition has improved color, purity, and odor properties.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: July 4, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Alan E. Sherry, Benjamin E. Chapman, Michael T. Creedon
  • Patent number: 4075382
    Abstract: A nonwoven disposable towel, having particular utility as a surgical towel, comprising a five-ply structure and method of making it. The outermost plies of the towel are tissue. To each of these tissue plies there is adhered an intermediate ply constituting a medium density, thermoplastic, long fibered, nonwoven material. These tissue-intermediate ply assemblies comprise primary laminates accounting for four plies of the towel. Between these primary laminates there is located a fifth or center ply constituting a low density, melt blown, long fibered, nonwoven material. The entire structure is heat sealed about its periphery and additional spot heat bonds may be employed to minimize slippage between the center ply and the two primary laminates. The two primary laminates may be embossed prior to assembly of the towel.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: February 21, 1978
    Assignee: The Procter & Gamble Company
    Inventors: Benjamin E. Chapman, Danny R. Moore, Arthur F. Phillips