27 Utility Patents
#14 in Bolton, MA
#2,909 in Massachusetts
#55,857 in US
#108,377 in the World
Forward Citations = 381
Company Filing History:



4. 4 out of 40
Transkaryotic Therapies, Inc.
5. 4 out of 24
T Cell Sciences, Inc.
where one patent can have more than one assignee
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