53 Utility Patents
#1 in Elkridge, MD
#163 in Maryland
#18,191 in US
#34,000 in the World
Forward Citations = 620
Company Filing History:

Srchem Incorporated
Calwood Chemical Industries, Inc.
4. 6 out of 853

5. 5 out of 6
Purification Engineering, Inc.
where one patent can have more than one assignee
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