Inventor
JOHNSON JR CLARK E
US15 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON JR CLARK E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CARITAS TECHNOLOGIES INC
5 patentsUS6266328B1Jul 24, 2001
Dial up telephone conferencing system controlled by an online computer network
CARITAS TECHNOLOGIES INC45 citations94
US6072780AJun 6, 2000
Dial up telephone conferencing system controlled by an online computer network
CARITAS TECHNOLOGIES INC60 citations94
US6661779B2Dec 9, 2003
Dial up telephone conferencing system controlled by an online computer network
CARITAS TECHNOLOGIES INC23 citations91
US6480474B2Nov 12, 2002
Telephone call-back system controlled by an online data network in real-time
CARITAS TECHNOLOGIES INC18 citations82
US7522542B2Apr 21, 2009
Dial up telephone conferencing system controlled by an online computer network
CARITAS TECHNOLOGIES INC7 citations72
JOHNSON CLARK E JUN
3 patentsUS4119911AOct 10, 1978
Magnetoresistor displacement sensor using a magnetoresistor positioned between relatively moving magnetized toothed members
JOHNSON CLARK E JUN33 citations90
US8855278B2Oct 7, 2014
Dial up telephone conferencing system controlled by an online computer network
JOHNSON CLARK E JUN0 citations49
US8077844B2Dec 13, 2011
Dial up telephone conferencing system controlled by an online computer network
JOHNSON CLARK E JUN0 citations49
MICRO COMMUNICATIONS CORP
3 patentsUS4013239AMar 22, 1977
Continuous loop tape cassette
MICRO COMMUNICATIONS CORP7 citations68
US4127878ANov 28, 1978
Magnetic tape recorder/reproducer for ratio recording with synchronized internal and external clock rates
MICRO COMMUNICATIONS CORP13 citations65
US4107752AAug 15, 1978
High density magnetic storage disc comprising a spiral of magnetic tape
MICRO COMMUNICATIONS CORP1 citations51