Patents by Inventor John Tsai

John Tsai 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).

  • Hydrolyzed zein as hair fixative in hair compositions
    Patent number: 5518717
    Abstract: This invention relates to hair fixing compositions containing a natural based hydrolyzed zein fixative which has a selected molecular weight, the composition having low volatile organic compound (VOC) content.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: May 21, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Natalie Morawsky, Gary T. Martino, Jacob Guth, John Tsai, Roger Jeffcoat
  • Paper products using starches modified with amino-multicarboxylates
    Patent number: 5500087
    Abstract: Amino-multicarboxylate starch ether derivatives are provided having the following structure: ##STR1## wherein St-O represents a starch molecule,R is H or CH.sub.3 ;R' is H, CH.sub.3 or COOH;M is a cation;n is 2 or 3; andR" is H or alkyl of 1 to 18 carbon atoms.These starch derivatives are particularly useful as retention and strength aids in papermaking.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: March 19, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Karen A. Bernard, John Tsai, Robert L. Billmers, Robert W. Sweger
  • Starches modified with amino-multicarboxylates
    Patent number: 5455340
    Abstract: Amino-multicarboxylate starch ether derivatives are provided having the following structure: ##STR1## wherein St-O represents a starch molecule,R is H or CH.sub.3 ;R' is H, CH.sub.3 or COOH;M is a cation;n is 2 or 3; andR" is H or alkyl of 1 to 18 carbon atoms.These starch derivatives are particularly useful as retention and strength aids in papermaking.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: October 3, 1995
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Karen A. Bernard, John Tsai, Robert L. Billmers, Robert W. Sweger
  • Structure for the external cap of a spout
    Patent number: 5287982
    Abstract: The improved structure for the external cap of a spout used in waterbeds has a cap body with a slot opening, and two flanges with punched holes extending from the edge of said external cap. The two supporting legs of a hand grip can feed through the punched holes of the flanges and move freely. The user can pull up the hand grip to rotate the external cap body in order to open or close said external cap. The horizontal portion of said hand grip has a T-shaped sectional surface which can be partially adapted into the slot; the bottom end portions of the supporting legs have inverted hooks on both sides to avoid the hand grip from disengaging with the external cap.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: February 22, 1994
    Assignee: Ho Lee Co., Ltd.
    Inventor: John Tsai
  • Crossroad without traffic lights
    Patent number: 4955751
    Abstract: A crossroad includes two roads intersected with each other. One of the roads is level and straight, and the other road is provided with a pair of second dimensional passages, such as tunnels, subways or elevated roadways, each with a respective bypass merging into one side thereof. The entrance of each passage is provided adjacent to and a short distance from the level road. The exit of each passage is provided adjacent to the opposite side of the level road.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: September 11, 1990
    Inventor: John Tsai