Patents by Inventor John A. Stradal

John A. Stradal 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).

  • Flavoring and browning materials by pyrolysis of sugars and starches
    Patent number: 5397582
    Abstract: A method of producing a browning liquid product by pyrolyzing sugars and starches. The browning liquid imparts a brown, smoked color to a cooked foodstuff without imparting an undesirable strong smoked flavor to the foodstuff.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: March 14, 1995
    Assignee: Red Arrow Products Company Inc.
    Inventors: Gary L. Underwood, John A. Stradal
  • Process for producing hydroxyacetaldehyde
    Patent number: 5393542
    Abstract: This invention provides a process for producing crystalline hydroxyacetaldehyde precipitated from a complex mixture of products provided by the pyrolysis of a carbohydrate-containing feedstock. The method includes distilling a first condensate under reduced pressure to give a second condensate which is enriched in hydroxyacetaldehyde; combining the second condensate with a solvent to give a homogeneous solution; precipitating hydroxyacetaldehyde from the solution; and separating the precipitated hydroxyacetaldehyde from the solution.Aqueous solutions of hydroxyacetaldehyde are useful for browning foodstuffs and for producing flavors by contacting the hydroxyacetaldehyde with ammonia or amines.In addition, hydroxyacetaldehyde may be used to make an artificial tanning product containing a suitable topical vehicle and an amount of hydroxyacetaldehyde suitable to impart a brown color to skin.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: February 28, 1995
    Assignee: Red Arrow Products Company Inc.
    Inventors: John A. Stradal, Gary L. Underwood
  • Browning materials derived from the pyrolysis of sugars and starches
    Patent number: 5292541
    Abstract: The invention relates to a process for producing a liquid product for coloring and flavoring a foodstuff by pyrolyzing sugars and starches. The liquid product is useful for imparting a brown smoked color to a foodstuff without adding undesired strong smoked flavors to the foodstuff.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: March 8, 1994
    Assignee: Red Arrow Products Company Inc.
    Inventors: Gary L. Underwood, John A. Stradal
  • Process for producing hydroxyacetaldehyde
    Patent number: 5252188
    Abstract: This invention provides a process for producing crystalline hydroxyacetaldehyde precipitated from a complex mixture of products provided by the pyrolysis of a carbohydrate-containing feedstock. The method includes distilling a first condensate under reduced pressure to give a second condensate which is enriched in hydroxyacetaldehyde; combining the second condensate with a solvent to give a homogeneous solution; precipitating hydroxyacetaldehyde from the solution; and separating the precipitated hydroxyacetaldehyde from the solution.Aqueous solutions of hydroxyacetaldehyde are useful for browning foodstuffs and for producing flavors by contacting the hydroxyacetaldehyde with ammonia or amines.In addition, hydroxyacetaldehyde may be used to make an artificial tanning product containing a suitable topical vehicle and an amount of hydroxyacetaldehyde suitable to impart a brown color to skin.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: October 12, 1993
    Assignee: Red Arrow Products Company, Inc.
    Inventors: John A. Stradal, Gary L. Underwood