Inventor
LETTOW JOHN S
US44 patents
⚠️ This page may combine multiple inventors who share the name “LETTOW JOHN S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VORBECK MATERIALS CORP
17 patentsUS10082830B2Sep 25, 2018
Wearable electronic devices
VORBECK MATERIALS CORP11 citations84
US10379576B1Aug 13, 2019
Wearable electronic devices
VORBECK MATERIALS CORP3 citations73
US10321593B1Jun 11, 2019
Interconnect device
VORBECK MATERIALS CORP4 citations71
US12363799B2Jul 15, 2025
Wireless signal transmission using access point networks in wearable devices
VORBECK MATERIALS CORP0 citations60
US11818805B2Nov 14, 2023
Wireless signal transmission using access point networks in wearable devices
VORBECK MATERIALS CORP0 citations60
US9085667B2Jul 21, 2015
Reinforced polymeric articles
VORBECK MATERIALS CORP1 citations60
US10270183B1Apr 23, 2019
Graphene-based rotman lens
VORBECK MATERIALS CORP1 citations56
US10166811B1Jan 1, 2019
Security devices
VORBECK MATERIALS CORP0 citations51
US9956806B1May 1, 2018
Security devices
VORBECK MATERIALS CORP0 citations51
US9810350B1Nov 7, 2017
Fuel system components
VORBECK MATERIALS CORP1 citations51
US9811774B2Nov 7, 2017
Resilient radio-frequency tag
VORBECK MATERIALS CORP1 citations50
US10349178B2Jul 9, 2019
Microphone diaphragm
VORBECK MATERIALS CORP0 citations49
US9512290B2Dec 6, 2016
Reinforced polymeric articles
VORBECK MATERIALS CORP0 citations49
US9321894B2Apr 26, 2016
Reinforced polymeric articles
VORBECK MATERIALS CORP0 citations49
US12150497B2Nov 26, 2024
Textile transmission line assemblies
VORBECK MATERIALS CORP0 citations45
US10176937B2Jan 8, 2019
Electrical switches and sensors
VORBECK MATERIALS CORP0 citations45
US10103446B2Oct 16, 2018
Graphene-based rotman lens
VORBECK MATERIALS CORP1 citations45
H2GEN INNOVATIONS INC
7 patentsUS7641716B2Jan 5, 2010
Methods and apparatus for improved control of PSA flow variations
H2GEN INNOVATIONS INC67 citations98
US6918953B2Jul 19, 2005
Modular pressure swing adsorption process and apparatus
H2GEN INNOVATIONS INC98 citations93
US6805729B2Oct 19, 2004
System and method for handling fluid using a manifold
H2GEN INNOVATIONS INC44 citations89
US7017529B1Mar 28, 2006
Boiler system and method of controlling a boiler system
H2GEN INNOVATIONS INC16 citations79
US7347978B2Mar 25, 2008
Electrically heated catalyst support plate and method for starting up water gas shift reactors
H2GEN INNOVATIONS INC7 citations68
US7600489B2Oct 13, 2009
Heat exchanger having plural tubular arrays
H2GEN INNOVATIONS INC4 citations60
US6887301B2May 3, 2005
Flow control in pressure swing adsorption systems
H2GEN INNOVATIONS INC0 citations48
UNIV PRINCETON
5 patentsUS10244628B2Mar 26, 2019
Printed electronics
UNIV PRINCETON3 citations83
US5869432AFeb 9, 1999
Method for producing ceramic superconductor single crystals
UNIV PRINCETON7 citations69
US9913374B2Mar 6, 2018
Printed electronics
UNIV PRINCETON1 citations60
US9504150B2Nov 22, 2016
Printed electronics
UNIV PRINCETON0 citations51
US9107312B2Aug 11, 2015
Printed electronics
UNIV PRINCETON0 citations51
CRAIN JOHN M
4 patentsUS8697485B2Apr 15, 2014
Printed electronics
CRAIN JOHN M36 citations95
US8278757B2Oct 2, 2012
Printed electronics
CRAIN JOHN M65 citations95
US9039938B2May 26, 2015
Coatings containing functionalized graphene sheets and articles coated therewith
CRAIN JOHN M18 citations91
US9625062B2Apr 18, 2017
Fuel system components
CRAIN JOHN M1 citations50
LETTOW JOHN S
4 patentsUS9518188B2Dec 13, 2016
Method of printing a conductive article and articles made thereby
LETTOW JOHN S14 citations78
US9447251B2Sep 20, 2016
Articles having a compositional gradient and methods for their manufacture
LETTOW JOHN S2 citations61
US9922744B2Mar 20, 2018
Graphene-sulfur compositions and electrodes made therefrom
LETTOW JOHN S0 citations51
US9731540B2Aug 15, 2017
Security devices
LETTOW JOHN S0 citations50