Inventor · disambiguated record
R. David Lewis
Also filed as: LEWIS R DAVID
8 granted patents·216 citations·filing 1994–2009
89Inventor score
Top patents by PatentIndex Score
8 records- 0184US7536439B1Methods and apparatus for categorizing failure messages that result from email messagesDIGITAL IMPACT INC·Filed 2003·Granted May 19, 2009·47 cites·15 claims
- 0283US5529096AAir tank filling systemINT SAFETY INSTR INC·Filed 1994·Granted Jun 25, 1996·51 cites·2 claims
- 0368US8108475B2Methods and apparatus for categorizing failure messages that result from email messagesJALADANKI SREENIVASULU·Filed 2009·Granted Jan 31, 2012·4 cites·18 claims
- 0464US6062222AFace mask for self contained breathing apparatusINT SAFETY INSTR INC·Filed 1997·Granted May 16, 2000·42 cites·15 claims
- 0561US6032664APressure display for self contained breathing apparatusINT SAFETY INSTR INC·Filed 1996·Granted Mar 7, 2000·22 cites·8 claims
- 0659US5660503ALight weight scuba with buoyancy controlFiled 1996·Granted Aug 26, 1997·19 cites·9 claims
- 0750US5640148ADual activation alarm systemINT SAFETY INSTR INC·Filed 1996·Granted Jun 17, 1997·23 cites·6 claims
- 0828US6050261ACombination backframe and self contained breathing apparatusINT SAFETY INSTR INC·Filed 1997·Granted Apr 18, 2000·8 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →