Inventor · Trabuco Canyon, CA, US

Ramon S. Co

59Patents
17h-index
23Co-inventors
84Inventor score

Filing activity: Jan 15, 1985 → Feb 6, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US5550515A Multiphase clock synthesizer having a plurality of phase shifted inputs to a plurality of phase comparators in a phase locked loop Electricity 70 Expired
US7474576B2 Repairing Advanced-Memory Buffer (AMB) with redundant memory buffer for repairing DRAM on a fully-buffered memory-module Physics 70 Active
US7688929B2 All-digital phase modulator/demodulator using multi-phase clocks and digital PLL Electricity 62 Active
US5631587A Frequency synthesizer with adaptive loop bandwidth Electricity 62 Expired
US6357023B1 Connector assembly for testing memory modules from the solder-side of a PC motherboard with forced hot air Electricity 59 Expired
US5173755A Capacitively induced electrostatic discharge protection circuit Electricity 55 Expired
US6351827B1 Voltage and clock margin testing of memory-modules using an adapter board mounted to a PC motherboard Electricity 47 Expired
US7379361B2 Fully-buffered memory-module with redundant memory buffer in serializing advanced-memory buffer (AMB) for repairing DRAM Physics 45 Active
US5325400A Method and apparatus for predistortion of signals in digital transmission systems Electricity 43 Expired
US6584576B1 Memory system using complementary delay elements to reduce rambus module timing skew Physics 39 Expired
US7487428B2 Fully-buffered memory-module with error-correction code (ECC) controller in serializing advanced-memory buffer (AMB) that is transparent to motherboard memory controller Physics 38 Active
US6396841B1 Dual-speed stackable repeater with internal bridge for cascading or speed-linking Electricity 30 Expired
US5602882A Digital jitter attenuator using selection of multi-phase clocks and auto-centering elastic buffer Electricity 26 Expired
US6415397B1 Automated multi-PC-motherboard memory-module test system with robotic handler and in-transit visual inspection Electricity 23 Expired
US5491729A Digital phase-locked data recovery circuit Electricity 20 Expired
US5436934A Differential high frequency level detector and data restoration circuit including squelch offset and slicing offset Electricity 18 Expired
US6824410B1 Zero-insertion-force hinged clam-shell socket for testing memory modules Electricity 17 Expired
US5162888A High DC breakdown voltage field effect transistor and integrated circuit Electricity 17 Expired
US5436939A Multi-phase clock generator and multiplier Electricity 17 Expired
US6910162B2 Memory-module burn-in system with removable pattern-generator boards separated from heat chamber by backplane Physics 17 Expired
US5502750A Digital jitter attenuator using selection of multi-phase clocks and auto-centering elastic buffer for a token ring network Electricity 16 Expired
US4706244A Frequency multiplexed telephone system Electricity 16 Expired
US7111211B1 Efficient air-flow loop through dual burn-in chambers with removable pattern-generator boards for memory-module environmental testing Physics 15 Expired
US7272774B2 Extender card for testing error-correction-code (ECC) storage area on memory modules Physics 15 Expired
US6981886B1 Sliding levered handles engaging and pushing memory modules into extender-card socket Electricity 14 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.