Wyoming Inventors Database
Wyoming Inventors : Name Search Results

Chang Cha has a total of 5 patent(s) in the database.

* Some patents in this database have one or more inventors, not all of whom may be from Wyoming.

 

  1. Patent Number: 5041209     View patent at USPTO
    Title: PROCESS FOR REMOVING HEAVY METAL COMPOUNDS FROM HEAVY CRUDE OIL
    Assignee: Western Research Institute
    Issue Date: August 20, 1991
    Inventor(s): John E. Boysen, Laramie, WY
    Jan F. Branthaver, Laramie, WY
    Chang Yul Cha, Golden, CO

  2. Patent Number: 5087269     View patent at USPTO
    Title: INCLINED FLUIDIZED BED SYSTEM FOR DRYING FINE COAL
    Assignee: Western Research Institute
    Issue Date: February 11, 1992
    Inventor(s): John E. Boysen, Laramie, WY
    Chang Yul Cha, Golden, CO
    Norman W. Merriam, Laramie, WY

  3. Patent Number: 5164054     View patent at USPTO
    Title: LOW-COST PROCESS FOR HYDROGEN PRODUCTION
    Assignee: None
    Issue Date: November 17, 1992
    Inventor(s): Hans F. Bauer, Morgantown, WV
    Chang Yul Cha, Golden, CO
    Robert W. Grimes, Laramie, WY

  4. Patent Number: 5171406     View patent at USPTO
    Title: FLUIDIZED BED SELECTIVE PYROLYSIS OF COAL
    Assignee: Western Research Institute
    Issue Date: December 15, 1992
    Inventor(s): Chang Yul Cha, Golden, CO
    Norman W. Merriam, Laramie, WY
    Jer Y. Shang, McLean, VA

  5. Patent Number: 5198084     View patent at USPTO
    Title: LOW-COST PROCESS FOR HYDROGEN PRODUCTION
    Assignee: Western Research Institute
    Issue Date: March 30, 1993
    Inventor(s): Hans F. Bauer, Morgantown, WV
    Chang Yul Cha, Golden, CO
    Robert W. Grimes, Laramie, WY