Learn more

UNION SWITCH & SIGNAL INC

Overview
  • Total Patents
    258
About

UNION SWITCH & SIGNAL INC has a total of 258 patent applications. Its first patent ever was published in 1984. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets transport, measurement and control are AUXILIAIRE D ETUDES ELECTROTEC, QUANTUM ENGINEERING INC and TRAFFIC CENTRAL TECH CO LTD.

Patent filings per year

Chart showing UNION SWITCH & SIGNAL INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Franke Raymond C 29
#2 Giras Theo C 28
#3 Wydotis Leonard M 21
#4 Profeta Joseph A 19
#5 Chew James P 16
#6 Mcquistian Kevin M 16
#7 Capan Ronald R 14
#8 Romano Dario 13
#9 Bozio Robert P 13
#10 Colbaugh Michael E 11

Latest patents

Publication Filing date Title
WO2009061724A1 A graphical user interface for enabling faster navigation among monitors in a multiple monitor workstation
CA2625157A1 Cab signal receiver demodulator employing redundant, diverse field programmable gate arrays
CA2621698A1 System and method of longitude and latitude coordinate transformation
CA2621659A1 Vital system for determining location and location uncertainty of a railroad vehicle with respect to a predetermined track map using a global positioning system and other diverse sensors
US2008093508A1 Unitary body hollow tie for a switch machine
US2008093507A1 Concrete tie
US2008093509A1 Railroad crossing gate having a universal crossing gate arm with a rack and pinion counterweight adjustment system
WO2007055782A2 User interface and display system for information from several railroad cad systems
US2006266889A1 Electronic vital relay
US7199883B1 System and method for sensing position of a vehicle
WO2004098975A2 Method and system providing sleep and wake-up modes for railway track circuit unit
US7395140B2 Geographic information system and method for monitoring dynamic train positions
US2007168710A1 Hot standby method and apparatus
US7168662B1 Hollow tie railroad switching assembly
US6648276B1 Drop down lug for railroad switch application
US6494409B1 Railway code following apparatus
US2003106967A1 Modular point detector for railroad track signal
US6471163B1 Ergonomic hand throw arm for railroad switch mechanism
US6439513B1 Passive detection system for levitated vehicle or levitated vehicle system
US6484974B1 Controller for switch machine