31 Utility Patents
#30 in Palatine, IL
#1,386 in Illinois
#42,946 in US
#82,595 in the World
Forward Citations = 575
Company Filing History:
Chemed Corporation
4. 2 out of 18
Dearborn Chemical Company Ltd.
5. 1 out of 217
Betzdearborn, Inc.
where one patent can have more than one assignee
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