Inventor · disambiguated record
John Hammerbeck
Also filed as: HAMMERBECK JOHN P R · HAMMERBECK JOHN PHILIP ROGER
2 granted patents·4 pending applications·6 citations·filing 2001–2011
47Inventor score
Top patents by PatentIndex Score
6 records- 0145US2013213613A1Heat transfer deviceHAMMERBECK JOHN PHILIP ROGER·Filed 2011·Application pending·0 cites
- 0241US7549357B2Ratio changing method and apparatusHAMMERBECK JOHN P R·Filed 2004·Granted Jun 23, 2009·6 cites·24 claims
- 0327US2012070326A1Compression method and meansHAMMERBECK JOHN PHILIP ROGER·Filed 2010·Application pending·0 cites
- 0424US2003083167A1Variable speed driveFiled 2002·Application pending·0 cites
- 0524US2003168792A1Coil springFiled 2001·Application pending·0 cites
- 0623US6508733B2Variable speed driveFiled 2001·Granted Jan 21, 2003·0 cites·42 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →