Inventor · North Andover, MA, US

Bartley C. Johnson

41Patents
16h-index
23Co-inventors
81Inventor score

Filing activity: Apr 5, 1989 → Dec 20, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US6204920A Optical fiber sensor system Physics 71 Expired
US6061170A Dual frequency laser amplifier array and operating method therefor Electricity 54 Expired
US8457440B1 Method and system for background subtraction in medical optical coherence tomography system Physics 52 Active
US6597836B2 Optical phased array control system Electricity 36 Expired
US8259303B2 OCT combining probes and integrated systems Physics 33 Active
US6233085A Apparatus, method, and computer program product for controlling an interferromic phased array Physics 33 Expired
US4918396A Monitoring and/or control of optical amplifiers Electricity 32 Expired
US5761351A Wavelength-addressable optical time-delay network and phased array antenna incorporating the same Physics 29 Expired
US8665450B2 Integrated dual swept source for OCT medical imaging Electricity 26 Active
US8139226B2 Soft clock delay for OCT system and method therefor Physics 24 Active
US8836953B2 OCT system with phase sensitive interference signal sampling Physics 22 Active
US9243885B2 Multi-speed OCT swept source with optimized k-clock Physics 19 Active
US8953167B2 OCT system with tunable clock system for flexible data acquisition Physics 19 Active
US5063426A InP/InGaAs monolithic integrated photodetector and heterojunction bipolar transistor Electricity 19 Expired
US9310182B2 Spectral filtering of k-clock signal in OCT system and method Physics 19 Active
US9869542B2 System and method for resampling optical coherence tomography signals in segments Physics 18 Active
US10184783B2 Optical coherence tomography laser with integrated clock Electricity 14 Active
US8564783B2 Optical coherence tomography laser with integrated clock Electricity 12 Active
US5696579A Method, apparatus and system for determining the differential rate of change of strain Physics 8 Expired
US8687666B2 Integrated dual swept source for OCT medical imaging Electricity 8 Active
US5589641A Strain and fabry-perot etalon measurement system and method Physics 8 Expired
US10109979B2 OCT system with bonded MEMS tunable mirror VCSEL swept source Electricity 4 Active
US6639922B2 Wavelength locker and optical system using the same Electricity 4 Expired
US10951009B2 Tunable VCSEL polarization control through dissimilar die bonding Electricity 3 Active
US10951007B2 Optically pumped tunable VCSEL employing geometric isolation Electricity 2 Active

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