Ching F Chang
Inventor
Stats
- 3 US patents issued
- 3 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 3 US Patents Issued
- 3 US Applications Filed
- 24 Total Citation Count
- Sep 27, 1996 Most Recent Filing
- Oct 10, 1989 Earliest Filing
Work History
Patent Owner | Applications Filed | Year |
---|---|---|
UCAR CARBON COMPANY INC. | 1
1 1 | 1989
1994 1996 |
Inventor Addresses
Address | Duration |
---|---|
Strongsville, OH | Dec 25, 90 - Dec 01, 98 |
Technology Profile
Technology | Matters | |
---|---|---|
C10C: | WORKING-UP TAR, PITCH, ASPHALT, BITUMEN; PYROLIGNEOUS ACID | 2 |
C23C: | COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL | 1 |
Patents / Publication
Patents / Publication # | Year of Publication / Issued | Title | Citations |
---|---|---|---|
5843298 | 1998 | Method of production of solids-free coal tar pitch | 8 |
5534133 | 1996 | Continuous method for increasing the Q. I. concentration of liquid tar while concurrently producing a Q. I. free tar | 5 |
4979998 | 1990 | Process for forming a metal boride coating on a carbonaceous substrate | 3 |
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