Patents by Inventor Edward R. Purves

Edward R. Purves 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: 5211981
    Abstract: A process for making a uniform liquid, pourable shortening involves preparing a melted base oil containing partially hydrogenated oil and optionally highly hydrogenated oil, then blending a melted emulsifier containing at least 30% monoglyceride with the base oil so that the monoglyceride content of the total blend is 10% to 16%. The amounts of emulsifier and highly hydrogenated oil are chosen so that they fall within the cross-hatched area EFGD in FIG. 1. The melted blend is rapidly cooled and partially crystallized in a first zone, and then worked by agitation in a second zone. The product shortening has the following solid fat index: 3-12 at 50.degree. F., 0-7 at 70.degree. F., 0-4 at 80.degree. F., 0-3 at 92.degree. F., and not more than 3 at 104.degree. F.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: May 18, 1993
    Assignee: The Procter & Gamble Company
    Inventors: Edward R. Purves, Larry D. Halstead, Keith D. Adams
  • Patent number: 5064670
    Abstract: A frying fat exhibiting a reduced concentration of saturates is disclosed. Said low-saturate frying fat is particularly useful in confectionary applications and is comprised of about 40% to about 80% intermediate-melting fat, and about 20% to about 60% unhydrogenated or partially-hydrogenated base oil. If desired, said frying fat may also contain less than about 7% fully- or substantially-hydrogenated hardstock having an iodine value of about 20 or less. Said intermediate-melting fat comprises from about 14% to about 35% C.sub.12 -C.sub.18 saturated fatty acids; at least about 40% trans-isomers of unsaturated fatty acids (by percentage of total fat); at least about 46% of all double bonds in the trans-configuration; at least about 40% solids (SFC) at 21.1.degree. C. (70.degree. F.); and has an iodine value of about 55 to about 75. Said base oil comprises no more than about 11% C.sub.12 -C.sub.18 saturated fatty acids and has an iodine value of about 75 or more.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: November 12, 1991
    Assignee: The Procter & Gamble Company
    Inventors: James B. Hirshorn, Timothy W. Dake, Edward R. Purves, Paul Seiden
  • Patent number: 4654221
    Abstract: This invention relates to an anti-sticking additive for cooking fats comprising a salt of an oxyacid of phosphorus, or mixtures thereof. The salts are of the formula MX, wherein M comprises an alkali metal, alkali earth metal, mixed alkali-other metal, or ammonium, and X comprises a hypophosphate, orthophosphate, pyrophosphate, polyphosphate, metaphosphate, or other similar anions. The cooking fat composition containing such a salt resists thermal darkening and off-flavor development during use. A method for reducing sticking of food during cooking comprises cooking with a fat composition containing a salt of an oxyacid of phosphorus, or mixtures thereof, as an anti-sticking agent.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: March 31, 1987
    Assignee: The Procter & Gamble Company
    Inventors: Edward R. Purves, Robert F. Thomas
  • Patent number: 4528201
    Abstract: Cooking fat compositions containing lecithin which resist excessive thermal darkening are disclosed. Methods for stabilizing lecithin to prevent excessive darkening in a heated cooking fat require treatment of the lecithin, or the cooking fat containing it, with a strongly basic compound. The lecithin can then be added to the fat at a higher level to improve the anti-sticking performance of the fat.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: July 9, 1985
    Assignee: The Procter & Gamble Co.
    Inventor: Edward R. Purves
  • Patent number: 4524085
    Abstract: Cooking fat compositions containing pretreated lecithin which resist thermal darkening are disclosed. The pretreatment, which comprises the addition of water to lecithin dissolved in a minimal amount of fat followed by heating and filtration, results in a decrease in the thermal discoloration of lecithin with no substantial reduction in its anti-sticking properties. This enables the use of lecithin at levels in fats higher than for untreated lecithin to improve the anti-sticking performance of the fat.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: June 18, 1985
    Assignee: The Procter & Gamble Company
    Inventors: Edward R. Purves, Robert F. Thomas