Assignee
MARK INC D
US·4 granted patents·306 citations·filing 1978–1993
Top patents by PatentIndex Score
4 records- 0191US5338340AFilter and method of making sameMARK INC D·Filed 1993·Granted Aug 16, 1994·109 cites·23 claims
- 0289US4227904AGas phase permeable filterMARK INC D·Filed 1978·Granted Oct 14, 1980·64 cites·15 claims
- 0388US4699681AMethod of making a gas phase permeable filterMARK INC D·Filed 1981·Granted Oct 13, 1987·62 cites·2 claims
- 0486US5124177AFilter and method of making sameMARK INC D·Filed 1990·Granted Jun 23, 1992·71 cites·24 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →