Patents by Inventor Stephen K. C. Yu

Stephen K. C. Yu 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).

  • Method of preparing particles for agglomeration
    Patent number: 6623760
    Abstract: Methods of preparing particulates for agglomeration, having a specified particle size distribution and desired convertible amorphous content, are described. The method involves a plurality of micronizing steps at least two of which are separated by a curing step. In the curing step, a stimulus such as humidity may be used to crystallize at least some, and in many instances preferably all, of the convertible amorphous content.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: September 23, 2003
    Assignee: Schering Corporation
    Inventors: Tsong-Toh Yang, Stephen K. C. Yu, Charles G. Eckhart, Michael B. Mitchell