Assignee
JOHNSON CONSTRUCTION CO AB
SE·3 granted patents·66 citations·filing 1984–1984
Top patents by PatentIndex Score
3 records- 0177US4601518AMethod of excavating rock caverns by blastingJOHNSON CONSTRUCTION CO AB·Filed 1984·Granted Jul 22, 1986·28 cites·4 claims
- 0262US4603910AMethod of blasting rock caverns with large cross-sectional areaJOHNSON CONSTRUCTION CO AB·Filed 1984·Granted Aug 5, 1986·27 cites·6 claims
- 0327US4641716AMethod and equipment for rock drillingJOHNSON CONSTRUCTION CO AB·Filed 1984·Granted Feb 10, 1987·11 cites·16 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →