Patents by Inventor Frank Cheng

Frank Cheng 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).

  • Publication number: 20080206878
    Abstract: A process for producing lube basestocks involving solvent dewaxing a waxy feed to produce at least a partially dewaxed lube oil boiling range stream and then hydrodewaxing the partially dewaxed lube oil boiling range stream to produce a lube basestock.
    Type: Application
    Filed: November 14, 2005
    Publication date: August 28, 2008
    Inventors: Frank Cheng-Yu Wang, Zhang Lei
  • Publication number: 20080163672
    Abstract: The invention relates to a method for analyzing a lubricating oil for low temperature properties. The method utilizes 2-dimensional gas chromatography (2D GC) to determine the amounts of paraffins and isoparaffins in the oil. In particular, the method analyzes for a particular isoparaffin fraction which is correlated to low temperature performance. The compositional information thus obtained is correlated with formulated oil Mini Rotary Viscometer (MRV) properties.
    Type: Application
    Filed: November 14, 2005
    Publication date: July 10, 2008
    Inventors: Frank Cheng-Yu Wang, Lei Zhang
  • Patent number: 6262148
    Abstract: The present invention relates to a compound according to formula (1) wherein n is 0, 2, 4 or 6 and a, b and c are, independently of one another, 1 or 0. R1-1a, R1-1b and R1-1c are hydrogen, a hydrocarbyl containing 1 to 10 carbon atoms which are alkyl, aryl, alkylene, arylalkyl or alkylaryl or a hydrocarbyl containing 1 to 10 carbon atoms and at least one heteroatom which can be oxygen, sulfur or nitrogen. R2-1a, R3-1a, R4-1a, R5-1a, R2-1b, R3-1b, R4-1b, R5-1b, R2-1c, R3-1c, R4-1c and R5-1c hydrogen or C1-C4alkyl. R6-1a, R7-1a, R6-1b, R7-1b, R6-1c and R7-1c are C1-C4akyl. A is an aromatic or alicyclic ring having 5 to 7 carbon atoms. The present invention further relates to a Mannich base reaction product obtained by combining an extract from cashew nutshell liquid with at least one aromatic or alicylic polyamine and at least one aldehyde compound, epoxy resin compositions and curable formulations containing the same, and methods for using such compositions.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: July 17, 2001
    Assignee: Vantico Inc.
    Inventors: Chi-Wen Frank Cheng, David Bender, Hsing Tie Wang
  • Patent number: 5955551
    Abstract: The present invention relates to polyglycidyl ether compounds containing at least three mono- or divalent radicals A of the general formula wherein R.sub.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: September 21, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Chi-Wen Frank Cheng, Mark Bryant
  • Patent number: 5189128
    Abstract: The advanced polymaleimide reaction product and solutions thereof resulting from the reaction of polymaleimides with alkenylphenols or alkenyl phenol ethers in the presence of specified molar amounts of an amine catalyst at elevated temperatures, the desired degree of resin advancement being reflected in solution stability and melt viscosity values.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: February 23, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Taishih Maw, Gina Kritchevsky, Frank Cheng