Patents by Inventor Kuei Tu Chang

Kuei Tu 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: 9763989
    Abstract: A multi-part nutritional supplement system supplies nutrients to a user at advantageous locations in the digestive tract. One type of dosage unit is formulated to release vitamin B12 in the stomach and intestines of the upper GI tract, advantageously in an amount that is greater than or at multiple levels of the DV (Daily Value) of vitamin B12.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 19, 2017
    Assignee: Shaklee Corporation
    Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
  • Publication number: 20160129058
    Abstract: A multi-part nutritional supplement system supplies nutrients to a user at advantageous locations in the digestive tract. One type of dosage unit is formulated to release vitamin B12 in the stomach and intestines of the upper GI tract, advantageously in an amount that is greater than or at multiple levels of the DV (Daily Value) of vitamin B12.
    Type: Application
    Filed: December 29, 2015
    Publication date: May 12, 2016
    Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
  • Patent number: 9248095
    Abstract: A multi-part nutritional supplement system supplies nutrients to a user at advantageous locations in the digestive tract. One type of dosage unit is formulated to release vitamin B12 in the stomach and intestines of the upper GI tract, advantageously in an amount that is greater than or at multiple levels of the DV (Daily Value) of vitamin B12.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: February 2, 2016
    Assignee: Shaklee Corporation
    Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
  • Publication number: 20140178347
    Abstract: A multi-part nutritional supplement system supplies nutrients to a user at advantageous locations in the digestive tract. One type of dosage unit is formulated to release vitamin B12 in the stomach and intestines of the upper GI tract, advantageously in an amount that is greater than or at multiple levels of the DV (Daily Value) of vitamin B12.
    Type: Application
    Filed: February 28, 2014
    Publication date: June 26, 2014
    Applicant: Shaklee Corporation
    Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
  • Publication number: 20100143533
    Abstract: A multi-part nutritional supplement system supplies nutrients to a user at advantageous locations in the digestive tract. One type of dosage unit is formulated to release vitamin B12 in the stomach and intestines of the upper GI tract, advantageously in an amount that is greater than or at multiple levels of the DV (Daily Value) of vitamin B12.
    Type: Application
    Filed: February 3, 2010
    Publication date: June 10, 2010
    Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
  • Publication number: 20020150617
    Abstract: The present invention provides a method of making tablet compositions that are substantially free of excipients. The method includes forming a compactable granular mixture containing at least one compaction enhancing therapeutic compound, at least one other therapeutic compound that is different form the compaction enhancing therapeutic compound, and less than about 15 weight percent of a non-aesthetic excipient. The compactable granular mixture thus obtained is compressed to form a tablet composition. The present invention also provides tablet compositions produced by the methods of the present invention that are substantially free of excipients.
    Type: Application
    Filed: January 29, 2002
    Publication date: October 17, 2002
    Applicant: Rexall Sundown, Inc.
    Inventors: William J. Mergens, Kuei Tu Chang, Gerald T. Holly
  • Patent number: 6358526
    Abstract: The present invention provides a method of making tablet compositions that are substantially free of excipients. The method includes forming a compactable granular mixture containing at least one compaction enhancing therapeutic compound, at least one other therapeutic compound that is different form the compaction enhancing therapeutic compound, and less than about 15 weight percent of a non-aesthetic excipient. The compactable granular mixture thus obtained is compressed to form a tablet composition. The present invention also provides tablet compositions produced by the methods of the present invention that are substantially free of excipients.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: March 19, 2002
    Assignee: Rexall Sundown
    Inventors: William J. Mergens, Kuei Tu Chang, Gerald T. Holly
  • Patent number: 6150086
    Abstract: Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 21, 2000
    Assignee: Roche Vitamins Inc.
    Inventors: Stasia Boyle, Kuei-Tu Chang
  • Patent number: 6146825
    Abstract: Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 14, 2000
    Assignee: Roche Vitamins Inc.
    Inventors: Stasia Boyle, Kuei-Tu Chang
  • Patent number: 6001554
    Abstract: Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: December 14, 1999
    Assignee: Roche Vitamins Inc.
    Inventors: Stasia Boyle, Kuei-Tu Chang
  • Patent number: 5938990
    Abstract: Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: August 17, 1999
    Assignee: Roche Vitamins Inc.
    Inventors: Stasia Boyle, Kuei-Tu Chang
  • Patent number: 5925381
    Abstract: Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: July 20, 1999
    Assignee: Roche Vitamins Inc.
    Inventors: Stasia Boyle, Kuei-Tu Chang
  • Patent number: 5340589
    Abstract: Low solubility drug coated bead compositions, capsules filled therewith and method of preparation thereof, especially wherein the low solubility drug is an antiandrogenic steroid and most especially wherein the antiandrogenic steroid is (5.alpha.,17.alpha.)-1'-(methylsulfonyl)- 1'-H-pregn-20-yno[3,2-c]pyrazol-17-ol, are disclosed.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: August 23, 1994
    Assignee: Sterling Winthrop Inc.
    Inventors: Gregg Stetsko, Kuei-Tu Chang
  • Patent number: 5223268
    Abstract: Low solubility drug coated bead compositions, capsules filled therewith and method of preparation thereof, especially wherein the low solubility drug is an antiandrogenic steroid and most especially wherein the antiandrogenic steroid is (5.alpha.,17.alpha.)1'-(methylsulfonyl)-1'H-pregn-20-yno[3,2-c]pyrazol-17- ol, are disclosed.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: June 29, 1993
    Assignee: Sterling Drug, Inc.
    Inventors: Gregg Stetsko, Kuei-Tu Chang
  • Patent number: 5051261
    Abstract: The invention is a sustained release dosage or delivery form, such as a tablet, pill, granule or the like capable of providing sustained release of a functionally active ingredient and the method for its manufacture. The invention comprises a matrix of a polymer containing functionally active ingredient and an excipient shaped at or above the glass transition temperature of said polymer into a form such as a granule, tablet or the like. Preferably the excipient is a microcrystalline cellulose.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: September 24, 1991
    Assignee: FMC Corporation
    Inventors: James W. McGinity, Kuei-Tu Chang