Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AK

Ajith Kuttannair Kumar

GE: 321 patents #1 of 36,430Top 1%
THTransportation Ip Holdings: 46 patents #1 of 657Top 1%
VSVirident Systems: 12 patents #7 of 20Top 35%
Microsoft: 5 patents #8,808 of 40,388Top 25%
WBWestinghouse Air Brake: 2 patents #88 of 284Top 35%
WTWestern Digital Technologies: 1 patents #1,787 of 3,180Top 60%
STSymbol Technologies: 1 patents #645 of 1,181Top 55%
EMEmc: 1 patents #1,879 of 3,345Top 60%
Erie, PA: #1 of 1,097 inventorsTop 1%
Pennsylvania: #4 of 74,527 inventorsTop 1%
Overall (All Time): #677 of 4,157,543Top 1%
391 Patents All Time

Issued Patents All Time

Showing 301–325 of 391 patents

Patent #TitleCo-InventorsDate
7302895 Configurable locomotive Glenn Robert Shaffer, Wolfgang Daum, Leonard Hill, James Glen Corry, Daniel Wolf +1 more 2007-12-04
7290807 Method and system of limiting the application of sand to a railroad rail 2007-11-06
7285926 System and method for locomotive adhesion control Jeremy Thomas McGarry, Somakumar Ramachandra-Panicker, Venkatarao Ryali, Bret Dwayne Worden, Jeffrey Louis Daigle +1 more 2007-10-23
7256513 Locomotive auxiliary power system Dimitrios Ioannidis 2007-08-14
7248057 Method, apparatus and computer-readable code for detecting on the fly an incipient ground fault in an electrical propulsion system of a locomotive 2007-07-24
7231877 Multimode hybrid energy railway vehicle system and method 2007-06-19
7190133 Energy storage system and method for hybrid propulsion Robert Dean King, Dongwoo Song, Lembit Salasoo 2007-03-13
7185591 Hybrid energy off highway vehicle propulsion circuit Henry Todd Young 2007-03-06
7152888 System and method for improved detection of locomotive friction modifying system component health and functionality Bret Dwayne Worden 2006-12-26
7137344 Hybrid energy off highway vehicle load control system and method Lembit Salasoo, Robert Dean King, Henry Todd Young 2006-11-21
7138773 Multiple inverters for motors 2006-11-21
7131614 Locomotive control system and method Jeffrey James Kisak, Bradley Hendrickson, Daniel Ballesty, Gerald Hess, Stephen Pelkowski 2006-11-07
7126293 Wheel slip correction system 2006-10-24
7121383 Wayside rail lubrication apparatus and method Bret Dwayne Worden 2006-10-17
7102355 Method, apparatus and computer-readable code for magnifying an incipient ground fault and enable quick detection of such fault 2006-09-05
7078877 Vehicle energy storage system control methods and method for determining battery cycle life projection for heavy duty hybrid vehicle applications Lembit Salasoo, Robert Dean King, Dongwoo Song, Henry Todd Young, Timothy Gerard Richter +1 more 2006-07-18
7061131 Method and system for optimizing energy storage in hybrid off-highway vehicle systems and trolley connected OHV systems Robert Dean King, Lembit Salasoo, Henry Todd Young 2006-06-13
7045981 Optimized locomotive traction system Mark Nicolussi, Paul Robert Hokanson 2006-05-16
7034480 Method for eliminating fuel use during dynamic braking Peter Loring Valentine 2006-04-25
7027900 Enhanced locomotive adhesion control Bret Dwayne Worden 2006-04-11
7021588 System and method for managing two or more locomotives of a consist Gerald Hess, Jan Nagle, Shuo Chen, Randall Slomski 2006-04-04
6973880 Hybrid energy off highway vehicle electric power storage system and method 2005-12-13
6893058 Railway train friction management and control system and method Vishwesh Palekar, Anthony Giammarise, Chi-Houng Lu, John Polley 2005-05-17
6873888 Method and system for improving acceleration rates of locomotives 2005-03-29
6854563 Wayside rail lubrication apparatus and method Bret Dwayne Worden 2005-02-15