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: 9763989Abstract: 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: GrantFiled: December 29, 2015Date of Patent: September 19, 2017Assignee: Shaklee CorporationInventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
-
Publication number: 20160129058Abstract: 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: ApplicationFiled: December 29, 2015Publication date: May 12, 2016Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
-
Patent number: 9248095Abstract: 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: GrantFiled: February 28, 2014Date of Patent: February 2, 2016Assignee: Shaklee CorporationInventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
-
Publication number: 20140178347Abstract: 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: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Applicant: Shaklee CorporationInventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
-
Publication number: 20100143533Abstract: 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: ApplicationFiled: February 3, 2010Publication date: June 10, 2010Inventors: Kuei-tu Chang, Carsten R. Smidt, John Castillo, William J. Mergens
-
Publication number: 20020150617Abstract: 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: ApplicationFiled: January 29, 2002Publication date: October 17, 2002Applicant: Rexall Sundown, Inc.Inventors: William J. Mergens, Kuei Tu Chang, Gerald T. Holly
-
Patent number: 6358526Abstract: 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: GrantFiled: August 16, 2000Date of Patent: March 19, 2002Assignee: Rexall SundownInventors: William J. Mergens, Kuei Tu Chang, Gerald T. Holly
-
Patent number: 6150086Abstract: 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: GrantFiled: November 12, 1999Date of Patent: November 21, 2000Assignee: Roche Vitamins Inc.Inventors: Stasia Boyle, Kuei-Tu Chang
-
Patent number: 6146825Abstract: 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: GrantFiled: November 12, 1999Date of Patent: November 14, 2000Assignee: Roche Vitamins Inc.Inventors: Stasia Boyle, Kuei-Tu Chang
-
Patent number: 6001554Abstract: 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: GrantFiled: January 16, 1998Date of Patent: December 14, 1999Assignee: Roche Vitamins Inc.Inventors: Stasia Boyle, Kuei-Tu Chang
-
Patent number: 5938990Abstract: 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: GrantFiled: May 24, 1995Date of Patent: August 17, 1999Assignee: Roche Vitamins Inc.Inventors: Stasia Boyle, Kuei-Tu Chang
-
Patent number: 5925381Abstract: 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: GrantFiled: June 2, 1997Date of Patent: July 20, 1999Assignee: Roche Vitamins Inc.Inventors: Stasia Boyle, Kuei-Tu Chang
-
Patent number: 5340589Abstract: 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: GrantFiled: May 12, 1993Date of Patent: August 23, 1994Assignee: Sterling Winthrop Inc.Inventors: Gregg Stetsko, Kuei-Tu Chang
-
Patent number: 5223268Abstract: 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: GrantFiled: May 16, 1991Date of Patent: June 29, 1993Assignee: Sterling Drug, Inc.Inventors: Gregg Stetsko, Kuei-Tu Chang
-
Patent number: 5051261Abstract: 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: GrantFiled: April 26, 1990Date of Patent: September 24, 1991Assignee: FMC CorporationInventors: James W. McGinity, Kuei-Tu Chang