Inventor · disambiguated record
Ralf Drews
Also filed as: DREWS RALF
9 granted patents·1 pending application·259 citations·filing 1995–2023
88Inventor score
Files withDRAEGERWERK AG4GREIF VELOX MASCHF GMBH2&AEGER SICHERHEITSTECHNIK1DRAEGER SAFETY AG & CO KGAA1DREWS RALF1
Top patents by PatentIndex Score
10 records- 0192US5601078ABreathing apparatus with a display unitDRAEGERWERK AG·Filed 1995·Granted Feb 11, 1997·176 cites·17 claims
- 0283US7336191B2Gas-measuring systemDRAEGER SAFETY AG & CO KGAA·Filed 2006·Granted Feb 26, 2008·12 cites·13 claims
- 0376US8212211B2System for protecting and/or guiding persons in dangerous situationsDREWS RALF·Filed 2008·Granted Jul 3, 2012·7 cites·20 claims
- 0464US5515846ARespirator with a breathing filterDRAEGERWERK AG·Filed 1995·Granted May 14, 1996·40 cites·9 claims
- 0561US12466589B2Valve bag filling deviceGREIF VELOX MASCHF GMBH·Filed 2023·Granted Nov 11, 2025·0 cites·20 claims
- 0656US12312120B2Closure device for flexible containers and a method for closing flexible containersGREIF VELOX MASCHF GMBH·Filed 2023·Granted May 27, 2025·0 cites·12 claims
- 0736US5704348ABreathing valveDRAEGERWERK AG·Filed 1996·Granted Jan 6, 1998·12 cites·20 claims
- 0833US2003200969A1Gas mask with a ring-shaped sealing element and breathing filter with a ring-shaped sealing elementFiled 2003·Application pending·0 cites
- 0930US5625902AProtective hood made of an elastic materialDRAEGERWERK AG·Filed 1995·Granted May 6, 1997·8 cites·21 claims
- 1021US6338341B1Protective breathing mask&AEGER SICHERHEITSTECHNIK·Filed 1999·Granted Jan 15, 2002·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →