Patent assignee · US · COMPANY

Opel, Inc.

23Patents
10Active
23Granted
41Portfolio score

Filing activity: Oct 25, 2002 → Apr 30, 2009 · 10 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US7807920B2 Concentrated solar photovoltaic module Emerging Cross-Sectional Technologies 62 Active
US6873273B2 Photonic serial digital-to-analog converter employing a heterojunction thyristor device Electricity 40 Expired
US6841795B2 Semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation Electricity 40 Expired
US6853014B2 Optoelectronic circuit employing a heterojunction thyristor device that performs high speed sampling Electricity 38 Expired
US6954473B2 Optoelectronic device employing at least one semiconductor heterojunction thyristor for producing variable electrical/optical delay Electricity 36 Expired
US7332752B2 Optoelectronic circuit employing a heterojunction thyristor device to convert a digital optical signal to a digital electrical signal Electricity 35 Expired
US6995407B2 Photonic digital-to-analog converter employing a plurality of heterojunction thyristor devices Electricity 31 Expired
US7173293B2 Semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation Electricity 14 Expired
US8188414B2 Grid support system for a tracker-mounted solar panel array for rooftop applications Emerging Cross-Sectional Technologies 13 Active
US6841806B1 Heterojunction thyristor-based amplifier Electricity 10 Expired
US7551826B2 Integrated circuit employing low loss spot-size converter Electricity 10 Active
US7333731B2 Multifunctional optoelectronic thyristor and integrated circuit and optical transceiver employing same Electricity 9 Expired
US7015120B2 Method of fabricating semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation Electricity 5 Expired
US6977954B2 Semiconductor laser array device employing modulation doped quantum well structures Electricity 5 Expired
US7385230B1 Modulation doped thyristor and complementary transistor combination for a monolithic optoelectronic integrated circuit Electricity 5 Expired
US7333733B2 Optoelectronic clock generator producing high frequency optoelectronic pulse trains with variable frequency and variable duty cycle and low jitter Electricity 4 Expired
US7432539B2 Imaging method utilizing thyristor-based pixel elements Emerging Cross-Sectional Technologies 3 Active
US7556976B2 Method of fabricating semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation Electricity 2 Active
US7855336B2 Concentrated solar photovoltaic module with protective light shielding Emerging Cross-Sectional Technologies 2 Active
US7409120B2 Integrated circuit for programmable optical delay Electricity 1 Active
US8080821B2 Thyristor radiation detector array and applications thereof Electricity 1 Active
US7595516B2 Optoelectronic circuit employing a heterojunction thyristor device to convert a digital optical signal to a digital electrical signal Electricity 1 Active
US7776753B2 Method of fabricating semiconductor devices employing at least one modulation doped quantum well structure and one or more etch stop layers for accurate contact formation Electricity 1 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.