Patents by Inventor Pei K. Chang

Pei K. Chang 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: 7052725
    Abstract: Methods for making artificially sweetened calcium fortified beverages and beverage concentrates, and the stable beverage and beverage concentrates formed thereby; calcium-supplemented beverages and beverage concentrates comprising a unique blend of calcium salts.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: May 30, 2006
    Assignee: PepsiCo, Inc.
    Inventors: Pei K. Chang, Thomas D. Lee, John Olszewski, Brenton G. Edgar, Richard Orr, Helen Curtiss
  • Patent number: 6803064
    Abstract: Ready to drink beverage compositions containing a nutritionally significant amount of calcium and a process for making the same. Calcium sulfate is used as the sole source of calcium.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 12, 2004
    Assignee: Pepsico, Inc.
    Inventors: Peter Given, Pei K. Chang, Patricia Amenedo, William Mutilangi
  • Patent number: 6458402
    Abstract: The invention is directed to a process of making milkshake beverage compositions having improved consistency, flavor and physical stability, which process involves eliminating or modifying the pasteurization step used or reversing the sequence of pasteurization and homogenization in conventional methods of manufacturing milkshake beverage compositions so as to limit the swelling of any starch granules present and thus avoid the detrimental effects that the shearing forces found in homogenization processes have on such swollen starch granules.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: October 1, 2002
    Assignee: PepsiCo, Inc.
    Inventor: Pei K. Chang
  • Publication number: 20020102331
    Abstract: Methods for making artificially sweetened calcium fortified beverages and beverage concentrates, and the stable beverage and beverage concentrates formed thereby; calcium-supplemented beverages and beverage concentrates comprising a unique blend of calcium salts.
    Type: Application
    Filed: October 16, 2001
    Publication date: August 1, 2002
    Inventors: Pei K. Chang, Thomas D. Lee, John Olszewski, Brenton G. Edgar, Richard Orr, Helen Curtiss
  • Patent number: 5955136
    Abstract: This invention relates to low fat, shelf-stable, ready-to-drink milk shake beverages having the mouth feel of high fat milk shake beverages. A unique combination of three carrageenans along with the other claimed ingredients give these low fat milk shake beverages the desired mouth feel of high fat milk shake beverages. In particular, the invention relates to low (about 1.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: September 21, 1999
    Assignee: Pepsico, Inc.
    Inventors: Thomas R. Laaman, Pei K. Chang
  • Patent number: 5417994
    Abstract: The invention is directed to microstable soft drink beverages containing at least two edible acids chosen from phosphoric, citric and malic acids as a microstabilizer, in combination with water, a flavor system of one or more flavor extracts and distillates, and a sweetener, such as HFCS. The beverages have a pH of from 2.2 to 2.7 and a TA of from 15 to 33. The beverages may advantageously contain additional ingredients, such as potassium chloride and another microstabilizing ingredient such as sodium polyphosphate, d-limonene or ascorbic acid. Such beverages have a desirable balance of organoleptic properties and are rendered highly microstable without the use of conventional chemical preservatives or thermal processing.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: May 23, 1995
    Assignee: Pepsico, Inc.
    Inventors: Pei K. Chang, Daniel Blase, Bruce Leavitt, Shashi Deshpande, Mansour Tavangaran
  • Patent number: 5336510
    Abstract: The invention is directed to color-stable syrup and beverage compositions fortified with vitamin C (ascorbic acid) which contain an azo food dye, such as FD&C Yellow #6. Riboflavin (vitamin B2) is employed as a color stabilizer and effectively prevents decoloring of the compositions, even upon prolonged periods of storage. The syrup and beverage formulations may optionally contain a glassy sodium polyphosphate, vitamin B6, vitamin B12, niacinamide, folic acid, calcium pantothenate, biotin, flavoring agents, sweeteners, acidic agents, etc.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: August 9, 1994
    Assignee: PepsiCo, Inc.
    Inventor: Pei K. Chang
  • Patent number: 4675201
    Abstract: The thermogelation temperature of protein in a solution having a pH above the isoelectric point of the protein can be lowered within the range of the thermogelation temperature of egg albumen and an increase of stability of the protein in a solution having a pH below the isoelectric point of the protein by a process comprising cooling an ungelled heated protein-containing alkaline solution having a total protein content of less than about 20% wherein the pH of the solution is within the range of from about 7.5 to about 10 and the temperature is within the range of from about 50.degree. C. up to the gelation temperature of the protein to a temperature sufficiently low and within a sufficient time after the solution reaches its maximum temperature level to prevent any substantial further change in the protein structure or gelation.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: June 23, 1987
    Assignee: Ciba Corning Diagnostics Corp.
    Inventors: Chang R. Lee, Pei K. Chang
  • Patent number: 4530788
    Abstract: A process for improving the viscosity of vegetable protein-containing solutions which comprises:1. adjusting the pH of an aqueous solution containing from about 3.5% to about 9.5% vegetable protein such as an oil seed protein wherein at least a major proportion of the protein is insoluble at its isoelectric point to a pH within the range of from about 7.5 to about 12;2. heating the alkaline solution of step (1) to an elevated temperature at a rate sufficient to produce an increase in viscosity and insufficient to provide a reduction in solubility; and3. cooling said heated solution to a temperature sufficient to retard further substantial change in the protein.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: July 23, 1985
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4500454
    Abstract: A process for increasing the viscosity of vegetable protein-containing solutions which comprises subjecting a substantially dry protein composition containing at least 60% protein which protein is substantially insoluble at its isoelectric point and substantially soluble above and below its isoelectric point to a heat treatment for a period of time sufficient to modify the protein such that the viscosity of a 10% solution of said treated protein composition is increased over a solution of untreated protein composition by at least 100%.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: February 19, 1985
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4411917
    Abstract: A fabricated seafood product is prepared by shaping a blend of seafood meat and as a binding agent therefor a combination comprising a whey protein concentrate composition having at least 30% protein wherein at least 50% of the protein in the whey protein concentrate composition is whey protein, and either (a) from about 1.25% to about 3% sodium tripolyphosphate or (b) from about 0.4 to about 1.25% sodium tripolyphosphate in combination with a food grade, nonphosphorus-containing alkalizing agent, the pH of said fabricated seafood product being within the range of from about 7.0 to about 7.75.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: October 25, 1983
    Assignee: Nutrisearch Company
    Inventor: Pei K. Chang
  • Patent number: 4364966
    Abstract: A dried blend of egg albumen and whey protein-containing composition which exhibits improved gel strength is prepared by subjecting desugared dried egg albumen to a heat treatment for a period of time ranging from in excess of about 2 weeks to about 8 weeks beyond the time the heat history of the dry egg albumen has remained above about 55.degree. C. said period of time being sufficient to elevate the gel strength of the egg albumen above 250 grams over the gel strength of the egg albumen prior to pasteurization, the blending from about 50% to about 85% of said so treated egg albumen with at least 15% of a whey protein-containing composition having from about 35% to about 80% whey protein.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: December 21, 1982
    Assignee: Nutrisearch Company
    Inventor: Pei K. Chang
  • Patent number: 4362761
    Abstract: Gelled egg white of the type normally found in hard boiled eggs can be replaced with substantially equivalent taste and mouth feel with a whey protein concentrate which is heat coagulated at a temperature of 80.degree. C. to 100.degree. C. at a pH within the range of about 7 to about 10.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: December 7, 1982
    Assignee: Nutrisearch Company
    Inventors: Pei K. Chang, Gabriele E. Scibelli
  • Patent number: 4267100
    Abstract: An egg white substitute is formed from whey proteins by adjusting a water solution containing the whey protein to a pH of from about 11 to about 13 and thereafter reducing the pH to a value of about 4.0 to about 6.0 to produce a water solution of a modified whey protein and insoluble whey solids. The water solution of the modified whey product can be used as an egg white substitute, e.g., in meringues. If the insoluble whey solids are rehydrolyzed, they too can be used as an egg white substitute.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: May 12, 1981
    Assignee: Stauffer Chemical Company
    Inventors: Pei K. Chang, Mary C. Concilio-Nolan
  • Patent number: 4238519
    Abstract: New egg albumen extenders are provided comprising a derived protein-containing composition obtained from plant or animal sources, wherein said derived protein-containing composition has a molecular weight of less than 20,000, a total Kjeldahl nitrogen (TKN) content of from about 0.45 to about 2.1% of which at least 60% of the Kjeldahl nitrogen is non-protein nitrogen, and optionally, a whipping aid such as an enzyme modified wheat or soy protein, in combination with a member selected from the group consisting of gelatin, gelatin and a water soluble polyphosphate, a gum and mixtures thereof.The products of the invention can be used as egg albumen extenders in whipped products such as meringues, nougat candy, divinity candy and cakes such as yellow or sponge cake.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: December 9, 1980
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4214009
    Abstract: Depending on the application, up to 100% of the egg albumen requirement of a food composition can be replaced with a composition comprising a whey protein concentrate and 0.5-15% carboxymethylcellulose. The composition of the present invention can also be used to extend whole eggs, replace milk up to 100% and combinations thereof. Substantially no change is seen in the food product containing the substitution. An economic advantage can be gained by the substitution.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: July 22, 1980
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4166142
    Abstract: Pasteurized process cheese, pasteurized process cheese food and spread, and imitation cheese spread products are disclosed which contain a partially soluble modified whey solids product derived from either adding a divalent metal ion to a cheese whey solution and adjusting the pH to between about 6.0 and about 8.0 at a temperature of below about 140.degree. F. or by adjusting the pH of a raw cheese whey containing at least 20% acid cheese whey to a value of between about 6.0 and about 8.0 to cause precipitation of the modified whey solids product.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: August 28, 1979
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4089987
    Abstract: An improved whippable whey protein containing composition is provided comprising a whey protein containing product having at least 20% soluble whey protein, in combination with a member selected from the group consisting of gelatin, gelatin and a water soluble polyphosphate, a gum and mixtures thereof, the whey protein containing product being prepared by:A. ultrafiltration of cottage cheese whey; orB. adjusting the pH of a solution containing a whey protein to a value of from about 11 to about 13, thereafter reducing the pH to a value of from about 4 to about 6 to yield a water solution of a water soluble whey product and insoluble whey solids and separating the water soluble whey final product; orC. hydrolyzing the insoluble whey solids of step (b) at a pH of between about 11 and about 13; orD.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: May 16, 1978
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang
  • Patent number: 4058510
    Abstract: Reaction of sodium lauryl sulfate with whey proteins forms a sodium lauryl sulfate-whey protein complex. Treatment of the complex with base to bring it to a pH of either from about 5.0 to about 6.5 at a solids content of from about 5% to about 30%, by weight, and at a temperature of from about 0.degree. C. to about 5.degree. C. or a pH of from about 11 to about 13 at a solids content of from about 2.5% to about 10% and a temperature of from about 0.degree. C. to about 5.degree. C. produces a precipitate and supernatant solution. The supernatant can be used to make an egg white substitute, after reduction of its sodium lauryl sulfate content, whereas the precipitate is high in sodium lauryl sulfate and can be recycled for use as a starting reagent.
    Type: Grant
    Filed: May 30, 1975
    Date of Patent: November 15, 1977
    Assignee: Stauffer Chemical Company
    Inventors: Mary C. Concilio-Nolan, Pei K. Chang
  • Patent number: 4029825
    Abstract: Egg white substitutes can be prepared from cheese or vegetable whey by first reacting it with sodium lauryl sulfate to form a complex which precipitates in acidic medium, and, after removal of most of the sodium lauryl sulfate, using the product as a replacer for natural egg white in food preparations.
    Type: Grant
    Filed: May 30, 1975
    Date of Patent: June 14, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Pei K. Chang