47 Utility and 1 Design Patents
#6 in Elk Grove Village, IL
#701 in Illinois
#22,791 in US
#42,932 in the World
rank by utility patentsForward Citations = 891
Company Filing History:

Ethyl Corporation
Imi-tech Corporation
4. 6 out of 832,448 patents
Other
5. 3 out of 250

where one patent can have more than one assignee
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