Inventor · disambiguated record
Berndt Ekwall
Also filed as: EKWALL BERNDT
8 granted patents·93 citations·filing 1987–2002
87Inventor score
Files withUNIROC AB3ATLAS COPCO ROCKTECH AB2ATLAS COPCO AB1ATLAS COPCO ROCK DRILLS AB1ATLAS COPCO SECOROC AB1
Top patents by PatentIndex Score
8 records- 0147US4871035ADamping device for a percussion rock drilling machineATLAS COPCO AB·Filed 1987·Granted Oct 3, 1989·19 cites·10 claims
- 0240US5318140AFluid operated drill apparatusUNIROC AB·Filed 1992·Granted Jun 7, 1994·18 cites·4 claims
- 0338US5375670ADrill string component for drilling with a liquid driven drilling machineATLAS COPCO ROCKTECH AB·Filed 1993·Granted Dec 27, 1994·13 cites·3 claims
- 0437US7757779B2Compressed air percussive mechanism for a down hole hammer and down hole hammerATLAS COPCO SECOROC AB·Filed 2002·Granted Jul 20, 2010·5 cites·8 claims
- 0535US5488998AFluid driven down-the-hole drilling machineATLAS COPCO ROCKTECH AB·Filed 1994·Granted Feb 6, 1996·11 cites·3 claims
- 0635US5279371ADown-the-hole drilling machineUNIROC AB·Filed 1993·Granted Jan 18, 1994·12 cites·3 claims
- 0733US5992545ADown-the-hole drilling machineUNIROC AB·Filed 1998·Granted Nov 30, 1999·10 cites·1 claims
- 0831US5787995AWater driven hammer deviceATLAS COPCO ROCK DRILLS AB·Filed 1995·Granted Aug 4, 1998·5 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →