Patents by Inventor James W. DuRoss

James W. DuRoss 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).

  • Cryoprotectant sorbitol crystal spherules
    Patent number: 5324751
    Abstract: Free-flowing formations of spherules of loose knit microcrystals of the polymorphs of sorbitol and mannitol are useful in fast-frozen food products as cryoprotectants due to their improved rate of solubility and dispersion. The free-flowing formations are also helpful in formulating confectionary and pharmaceutical products by improving processing efficiencies and texture and are useful in selected industrial applications as a result of their improved rate of solution and free-flowing characteristics.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: June 28, 1994
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Crystalline sugar alcohol containing uniformly dispersed liquid pharmaceutical compound
    Patent number: 5178850
    Abstract: A pharmaceutical composition comprising a crystalline sugar alcohol derived from at least one mono- or polysaccharide having at least one liquid pharmaceutically active compound uniformly dispersed within its crystal matrix is disclosed. Also disclosed is a method of producing such a uniformly dispersed pharmaceutical composition by the controlled crystallization of the molten sugar alcohol having the pharmaceutically active material dispersed therein.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: January 12, 1993
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Melt cocrystallized sorbitol/xylitol compositions
    Patent number: 5158789
    Abstract: Melt cocrystallized sorbitol/xylitol offers improved processing properties relative to blends of crystalline sorbitol and crystalline xylitol. Also disclosed are ingestible compositions, such as tablets and chewing gum, comprising melt cocrystallized sorbitol/xylitol as well as a process for the production thereof.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: October 27, 1992
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Melt crystallized xylitol
    Patent number: 5139795
    Abstract: Melt crystallized xylitol possesses an agglomerated crystalline structure under a scanning electron microscope; an increased surface area relative to aqueous crystallized xylitol, of at least about 0.12 square meters per gram; and unexpected hardness values when compressed into a tablet. Chewing gum compositions comprising such melt crystallized xylitol are much less tacky and gritty compared to gum compositions comprising equal proportions of conventional aqueous crystallized xylitol of similar particle size distribution.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: August 18, 1992
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Crystalline sugar alcohol containing uniformly dispersed particulate pharmaceutical compound
    Patent number: 5075291
    Abstract: A pharmaceutical composition comprising a crystalline sugar alcohol derived from at least one mono- or polysaccharide having uniformly dispersed within its crystal matrix particles of at least one pharmaceutically active compound is disclosed. Also disclosed is a method of producing such a uniformly dispersed pharmaceutical composition by the controlled crystallization of the molten sugar alcohol having the pharmaceutically active material dispersed therein.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: December 24, 1991
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Mannitol having gamma sorbitol polymorph
    Patent number: 5023092
    Abstract: Mannitol having the crystalline form of gamma sorbitol is made by co-crystallizing relatively high mannitol containing sorbitol melt in a twin screw mixer. Tablets, chocolate and chewing gum made with the co-crystallized product offer improvements similar to those realized with pure crystalline components.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: June 11, 1991
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss
  • Gamma-sorbitol polymorph
    Patent number: 4252794
    Abstract: A modified gamma-sorbitol polymorph having improved compressibility and hardness characteristics when formulated into a tablet while also exhibiting an absence or low degree of grit. Under a scanning electron microscope, the sorbitol polymorph of the invention is found to have a disrupted crystalline structure, substantial amounts of relatively large crystals not being coplanar with each other.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: February 24, 1981
    Assignee: ICI Americas Inc.
    Inventor: James W. DuRoss