Assignee
JOHNSON RALPH H
US·11 granted patents·2 pending applications·27 citations·filing 2004–2012
Top patents by PatentIndex Score
13 records- 0188US8451875B2Vertical cavity surface emitting laser having strain reduced quantum wellsJOHNSON RALPH H·Filed 2006·Granted May 28, 2013·8 cites·16 claims
- 0281US8837547B2Lasers with InGaAs quantum wells with InGaP barrier layers with reduced decompositionJOHNSON RALPH H·Filed 2012·Granted Sep 16, 2014·6 cites·13 claims
- 0378US8455279B2Surface gratings on VCSELS for polarization pinningJOHNSON RALPH H·Filed 2011·Granted Jun 4, 2013·3 cites·18 claims
- 0478US8168456B2Vertical cavity surface emitting laser with undoped top mirrorJOHNSON RALPH H·Filed 2010·Granted May 1, 2012·3 cites·20 claims
- 0575US8254424B2Semiconductor having enhanced carbon dopingJOHNSON RALPH H·Filed 2010·Granted Aug 28, 2012·2 cites·20 claims
- 0668US8213474B2Asymmetric DBR pairs combined with periodic and modulation doping to maximize conduction and reflectivity, and minimize absorptionJOHNSON RALPH H·Filed 2007·Granted Jul 3, 2012·2 cites·24 claims
- 0765US9124069B2Vertical cavity surface emitting laser with undoped top mirrorJOHNSON RALPH H·Filed 2012·Granted Sep 1, 2015·1 cites·20 claims
- 0862US8815617B2Passivation of VCSEL sidewallsJOHNSON RALPH H·Filed 2007·Granted Aug 26, 2014·1 cites·18 claims
- 0961US8193019B2Vertical cavity surface emitting laser having multiple top-side contactsJOHNSON RALPH H·Filed 2010·Granted Jun 5, 2012·1 cites·20 claims
- 1054US8325775B2Efficient carrier injection in a semiconductor deviceJOHNSON RALPH H·Filed 2010·Granted Dec 4, 2012·0 cites·19 claims
- 1153US8481350B2Asymmetric DBR pairs combined with periodic and modulation doping to maximize conduction and reflectivity, and minimize absorptionJOHNSON RALPH H·Filed 2012·Granted Jul 9, 2013·0 cites·23 claims
- 1245US2004213311A1Single mode vertical cavity surface emitting laserJOHNSON RALPH H·Filed 2004·Application pending·0 cites
- 1342US2006198412A1Grating-coupled surface emitting laser with gallium arsenide substrateJOHNSON RALPH H·Filed 2006·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when JOHNSON RALPH H files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →