using exhaust air from the drilling motor for blowing off the dust at the borehole entrance

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Patents Grantslast 30 patents

Information Patent Grant
Composition comprising an alkoxylated amine compound and a carboxyl...
- Patent number 11,124,688
- Issue date Sep 21, 2021
- Sasol Chemicals GmbH
- Heinz Napierala
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composition comprising an alkoxylated amine compound and a carboxyl...
- Patent number 9,909,049
- Issue date Mar 6, 2018
- Sasol Performance Chemicals GmbH
- Heinz Napierala
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Sealant system for roof drilling apparatus
- Patent number 4,175,757
- Issue date Nov 27, 1979
- Fansteel Inc.
- Kenneth C. Emmerich
- E21 - EARTH DRILLING MINING
Information Patent Grant
3431984
- Patent number 3,431,984
- Issue date Mar 11, 1969
- E21 - EARTH DRILLING MINING
Information Patent Grant
2913225
- Patent number 2,913,225
- Issue date Nov 17, 1959
- E21 - EARTH DRILLING MINING
Information Patent Grant
1894358
- Patent number 1,894,358
- Issue date Jan 17, 1933
- E21 - EARTH DRILLING MINING
Information Patent Grant
1698343
- Patent number 1,698,343
- Issue date Jan 8, 1929
- E21 - EARTH DRILLING MINING
Information Patent Grant
1620885
- Patent number 1,620,885
- Issue date Mar 15, 1927
- E21 - EARTH DRILLING MINING