VISCOGEN
USPTO (United States) · Serial 73258136
- Status
- cancelled
- Status updated
- 10 August 2002
- Filing date
- 14 April 1980
- Registration date
- 3 November 1981
- Nice classification
- 4
- Owner
- OPTITEC AMERICA CORPORATION
- Owner country
- US
- Raw status code
- 710
As filed by US
Authoritative source
The official US trademark record is at USPTO TSDR (serial 73258136) ↗. Where our data differs from the USPTO record, theirs is correct.
See methodology for refresh cadence + status normalisation. See sources for licensing.