Patents

"Technology is the greatest social leveler, second only to death."

- Sam Pitroda

1972

US3699264 Conference Circuit for Pulse Code Modulated Telephony

US3706855 Generator for Digital Pulse Signals Representative of Analog Signal Pairs

1973

US3710028 Detector for Digitally Transmitted Multifrequency Tones as Utilized for Signaling In a Pulse Code Modulated Telephone System

US3750111 Modular Digital Detector Circuit Arrangement

US3760371 Asynchronous Data Transmission Over a Pulse Code Modulation Carrier

1974

US3808368 Slaved PCM Clock Circuit

US3825683 Line Variation Compensation System For Synchronized PCM Digital Switching

US3839599 Line Variation Compensation System For Synchronized PCM Digital Switching

1975

US3890469 Time division switching system

US3920921 Line equipment for scan and control system for synchronized PCM digital switching exchange

1976

US3959588 Digital line synchronizer

US3997874 Time divided switching and concentration apparatus

US3999050 Electronic diary

1977

US4022991 Conferencing arrangement for use in a PCM system

US4031328 Conferencing arrangement for use in a PCM system

1979

US4146749 Telecommunications network having multi-function spare network block

US4149038 Method and apparatus for fault detection in PCM multiplexed system

US4154988 Method and means for accessing program memory of a common control telecommunications switching system

1980

US4205203 Methods and apparatus for digitally signaling sounds and tones in a PCM multiplex system

US4218589 Method and apparatus for testing tone generators

1981

US4256926 Microprocessor control complex for a telecommunication switching system

US4257119 PCM switching system for wide and narrow band signals

US4266292 Method and apparatus for testing analog-to-digital and digital-to-analog code converters

US4289934 Integrated automatic call distribution facility and PBX system

1986

US4613730 Electronic telephone with feature access and speed dialing including loop breaks

US4627047 Integrated voice and data telecommunication switching system

1994

US5349638 Universal calling/originating number identification

1996

US5590038 Universal electronic transaction card including receipt storage and system and methods of conducting electronic transactions

1997

EP0766852B1-2 Universal Electronic Transaction Card and System and Methods of Conducting Electronic Transactions

1999

US5884271 Device, system and methods of conducting paperless transactions

2004

US6705520 Point of sale adapter for electronic transaction device

US6769607 Point of sale and display adapter for electronic transaction device

2005

US6925439 Device, system and methods of conducting paperless transactions

US2005/0247777 Device, system and methods of conducting paperless transactions

2007

US7308426 System and methods for servicing electronic transactions

2008

US7366990 Method and system for managing user activities and information using a customized computer interface

2009

US7529563 System for distribution and use of virtual stored value cards

2012

US8239324 Mobile Terminal

US2012/0109672 Transactional Services

US2012/0109673 Transactional Services

2013

US8429046 System and methods for servicing electronic transactions

US8527380 System and methods for servicing electronic transactions

US8595132 System and methods for servicing electronic transactions

 

Sam Pitroda is the holder of close to 100 technology patents. All have been made public and are available for free download here.

 

 

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