Stephen Hsu 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).
Abstract: The present invention provides a method for machining hard materials using the machining fluids containing long chain alcohol in which the machining fluid is applied to a machining tool and then lubricates the machining of the workpiece by the machining tool and protects the machining tool during machining. The method is particularly useful when used with machining tools having a Mohs hardness of at least 9 and is most particularly useful when used with diamond machining tools.
April 16, 1998
Date of Patent:
March 27, 2001
The United States of America as represented by the Secretary
Stephen Hsu, Tsi-Neng Ying, Jia-Ming Gu, Yu-Shu Wang, Richard S. Gates
Abstract: A single resist layer lift-off process for forming patterned layers on a substrate, wherein a post-soak bake is used to control the extent to which chlorobenzene penetrates the resist layer. A post-metallization bake can also be employed to improve lift-off of the resist layer. The process of the present invention provides the resist profile with increased overhang length and the sidewalls of the resist profile with a negative slope. Such increased overhang length and negative slope prevent metallization of the sidewalls of the resist, and thus facilitate more rapid removal of the resist during lift-off.
Abstract: An improved method for performing immunoassays whereby specific binding proteins for vitamin B12, folate and other target analytes are utilized with antibodies with different specificities for the binding proteins. Antibodies bridge the specific binding protein directly or indirectly to a capturable material.
February 24, 1993
Date of Patent:
July 18, 1995
Michael J. Beggs, Linda J. Sohn, Robert J. Herrmann, Stephen Hsu, David J. Hawksworth, Mary S. Pinkus