Patents by Inventor J. Wallace Sawhill

J. Wallace Sawhill 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: 5656309
    Abstract: There is disclosed a stable animal feed supplement suspension which is prepared by forming a stable liquid gel in concentrated food industry by-products such as by-products of the dairy industry, such as whey permeates, delactosed whey, and by-products of the fermentation industry, such as whey and corn sweet water. These by-products have not been used with any significant success in animal feed supplements, despite their low cost and disposal problems. A major disadvantage is their limited solubility, and the resultant instability of concentrates of the by-products. The invention comprises the treatment of the protein-rich by-products with a mild enzymatic treatment which stabilizes the by-products against protein gelation, and the thermal, and/or enzymatic treatment of the lactose-rich by-products to avoid separation of the lactose from concentrates.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: August 12, 1997
    Assignee: Pacific Kenyon Corporation
    Inventor: J. Wallace Sawhill
  • Patent number: 4937082
    Abstract: There is disclosed a stable thixotropic suspension of water insoluble animal feed nutrients in an aqueous feed solution and a method for its preparation. The method comprises forming a liquid gel from an aqueous solution of sugar, protein or mixtures thereof, having a concentration of at least 60.degree. Brix, by adding calcium hyroxide and phosphoric acid or ammonium polyphosphate to the solution. The gel is diluted with water and insoluble feed nutrients such as fat, calcium carbonate, calcium sulfate, etc., or drugs such as monisan are suspended in the diluted gel. Water soluble feed nutrients such as urea, sodium bicarbonate, etc., can also be added.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: June 26, 1990
    Assignee: Pacific Kenyon Corp.
    Inventor: J. Wallace Sawhill
  • Patent number: 4804546
    Abstract: There is disclosed a stable thixotropic suspension of a fat in an aqueous liquid gel of a feed solution and a method for its preparation. The method comprises forming the liquid gel from a solution of sugar, protein or mixtures thereof, by incorporating ammonium phosphate in the solution in an amount sufficient to form the gel, adding water to reduce the concentration of the gel, and then adding fat. When fats with solidification temperatures above ambient temperature are added, the liquid gel is warmed to about the melting point of the fat and the fat is melted before mixing the fat with the liquid gel. Other water insoluble feed nutrients such as calcium carbonate, calcium sulfate, etc., or drugs such as monisan can also be suspended in the resultant gel. Water soluble feed nutrients such as urea, sodium bicarbonate, etc., can also be added.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: February 14, 1989
    Assignee: Pacific Kenyon Corp.
    Inventor: J. Wallace Sawhill
  • Patent number: 4800088
    Abstract: A method of making a free choice feed block solidified with calcium hydroxide, etc. which is improved by incorporating a 2 to 20% protein meal and 16-20% of a solid filler of brans, hulls and shells to produce a solid hardness of from 35-60. The presence of the protein meal and filler increases the hardness of the feed block.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: January 24, 1989
    Assignee: Pacific Kenyon Corp.
    Inventor: J. Wallace Sawhill
  • Patent number: 4729896
    Abstract: A buffer containing, solid, animal feed supplement which has the proper hardness and palatibility to achieve a daily animal consumption of 0.2-0.5 pound of sodium carbonate or bicarbonate and 0.07-0.15 pound of magnesium oxide with free choice feeding. The feed supplement is a solidified mixture of various feed ingredients with a feed solution of sugars or proteins, and mixtures thereof. The supplement is solidified by sodium carbonate, or a mixture thereof, and magnesium oxide.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: March 8, 1988
    Assignee: Pacific Kenyon Corp.
    Inventor: J. Wallace Sawhill
  • Patent number: 4643908
    Abstract: There is disclosed a new soft, moist pet food and a method for its manufacture. The pet food has a high moisture content, 25 to 50 weight percent, and contains two major nutrient ingredients which are: a protein source, such as a meat meal; and a sugar, each of which is used in an amount from 12 to about 35 weight percent on a dry weight basis. The pet food is prepared by mixing the protein source with an aqueous alkaline ingredient and the sugar to obtain a viscous, intimately admixed sol. The sol is then neutralized to a mildly acidic pH value and the resulting mixture is poured into containers in which it solidifies in a period of several hours, reaching most of its ultimate firmness in approximately 24 hours.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: February 17, 1987
    Assignee: Pacific Kenyon Corp.
    Inventor: J. Wallace Sawhill