Patents by Inventor Helena Qi

Helena Qi 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).

  • Production of cyclodextrin complexes
    Patent number: 6884885
    Abstract: The process entails increasing the concentration of cyclodextrin to 15% (w/w) and above to form complexes through a precipitation process in order to increase the yield of complexes, increase the amount of guest complexed, and decrease the particle size of the complex.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 26, 2005
    Assignee: Cerestar Holding B.V.
    Inventor: Helena Qi
  • Dry, edible oil and starch composition
    Patent number: 6638557
    Abstract: The dry composition has 50% w/w oil which contains polyunsaturated fatty acids such as omega-3 and/or omega-6 fatty acids, and 50% w/w of a starch based matrix. The starch based matrix has 70% by weight or more of a starch hydrolysate with a DE of 20-100 and a converted starch such as a thin boiled starch or a maltodextrin. The matrix can contain up to 15% of a cyclodextrin or lecithin. The composition is stable over time and is especially suited for use with food.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: October 28, 2003
    Assignee: Cerestar Holding B.V.
    Inventors: Helena Qi, Mike Remmert, Wen Shieh, Allan Hedges
  • Dry, edible oil and starch composition, a method for making the composition, and a foodstuff containing the composition
    Publication number: 20030044490
    Abstract: The dry composition has 50% w/w oil which contains polyunsaturated fatty acids such as omega-3 and/or omega-6 fatty acids, and 50% w/w of a starch based matrix. The starch based matrix has 70% by weight or more of a starch hydrolysate with a DE of 20-100 and a converted starch such as a thin boiled starch or a maltodextrin. The matrix can contain up to 15% of a cyclodextrin or lecithin. The composition is stable over time and is especially suited for use with food.
    Type: Application
    Filed: August 14, 2001
    Publication date: March 6, 2003
    Inventors: Helena Qi, Mike Remmert, Wen Shieh, Allan Hedges
  • Flavor stabilization in foods
    Publication number: 20020122870
    Abstract: Complexing a flavor with a cyclodextrin and then employing the complex in a food, stabilizes the flavor during frozen storage and during microwave cooking.
    Type: Application
    Filed: December 18, 2001
    Publication date: September 5, 2002
    Inventors: Christine McBride, Helena Qi, Allan Hedges
  • Production of cyclodextrin complexes
    Publication number: 20020120131
    Abstract: The process entails increasing the concentration of cyclodextrin to 15% (w/w) and above to form complexes through a precipitation process in order to increase the yield of complexes, increase the amount of guest complexed, and decrease the particle size of the complex.
    Type: Application
    Filed: December 17, 2001
    Publication date: August 29, 2002
    Inventor: Zhihong Helena Qi
  • Purification of chemically modified cyclodextrins
    Patent number: 5569756
    Abstract: Chemically modified cyclodextrins such as hydroxypropyl cyclodextrins are purified by treatment with an activated carbon made from either coal or coconut shells. The amount of activated carbon used is 50% to 300% by weight of modified cyclodextrin. The treatment removes organic impurities such as glycol introduced during the chemical modification process of the cyclodextrin. The treatment step is conducted by passing an aqueous solution of the unpurified modified cyclodextrin through a column packed with the activated carbon or by adding the activated carbon to a container of the unpruified modified cyclodextrin and mildly agitating the contents of the container to remove the impurities.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: October 29, 1996
    Assignee: American Maize-Products Company
    Inventors: Z. Helena Qi, Allan Hedges, Eduardo Sanchez