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Class Information
Number: 257/E49.004
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Solid-state devices with at least one potential-jump barrier or surface barrier using active layer of lower electrical conductivity than material adjacent thereto and through which carrier tunneling occurs, processes or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof (epo) > Thin-film or thick-film devices (epo)
Description: This subclass is indented under subclass E49.001. This subclass is substantially the same in scope as ECLA classification H01L49/02.

Patents under this class:

Patent Number Title Of Patent Date Issued
8581227 Quantum computational systems Nov. 12, 2013
8530887 Magnetoresistive element, method of manufacturing the same, and magnetic memory Sep. 10, 2013
8436332 Electron emission element and imaging device having the same May. 7, 2013
8183661 Semiconductor die with event detection for reduced power consumption May. 22, 2012
7944016 Power managing semiconductor die with event detection circuitry in thick oxide for reduced power consumption May. 17, 2011
7745824 Semiconductor device and method of manufacturing the same Jun. 29, 2010
5177498 Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus Jan. 5, 1993
5119112 Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus Jun. 2, 1992
5053249 Method for producing resistors Oct. 1, 1991
4963893 Heat-resistant insulating substrate, thermal printing head, and thermographic apparatus Oct. 16, 1990
4851808 Heat-generating resistor and heat-generating resistance device by use of said heat-generating resistor Jul. 25, 1989
4835550 Thick film type thermal head May. 30, 1989
4809428 Thin film device for an ink jet printhead and process for the manufacturing same Mar. 7, 1989
4804974 Thermal recording head Feb. 14, 1989
4782202 Method and apparatus for resistance adjustment of thick film thermal print heads Nov. 1, 1988
4779103 Thermal head and method of manufacturing the same Oct. 18, 1988
4751518 Heating resistor as a thermal head resistive element Jun. 14, 1988
4743923 Thermal head May. 10, 1988
4742361 Thermal print head May. 3, 1988
4734709 Thermal head and method for fabricating Mar. 29, 1988
4724182 Thin film circuit substrate Feb. 9, 1988
4710263 Method of fabricating print head for thermal printer Dec. 1, 1987
4709243 Thermal head and method for manufacture thereof Nov. 24, 1987
4705697 Electron beam formation of a thermal head using titanium silicide Nov. 10, 1987
4701769 Thermal head and method for fabrication thereof Oct. 20, 1987
4695853 Thin film vertical resistor devices for a thermal ink jet printhead and methods of manufacture Sep. 22, 1987
4632845 Process for the fabrication of thermal printing boards in multilayer thick-film technology Dec. 30, 1986
4601777 Thermal ink jet printhead and process therefor Jul. 22, 1986
4574292 Thermal head Mar. 4, 1986
4545881 Method for producing electro-thermal transducer Oct. 8, 1985
4517444 Thermal printhead May. 14, 1985
4504340 Material and process set for fabrication of molecular matrix print head Mar. 12, 1985
4446355 Crossover construction of thermal-head and method of manufacturing same May. 1, 1984
4343986 Thermal printhead Aug. 10, 1982
4329779 Methods of applying circuit elements to a substrate May. 18, 1982
4296309 Thermal head Oct. 20, 1981
4232213 Thermal head Nov. 4, 1980
4204107 Thick-film thermal printing head and method of manufacturing the same May. 20, 1980
4203119 Thermal printers May. 13, 1980
4203025 Thick-film thermal printing head May. 13, 1980
4168343 Thermal printing head Sep. 18, 1979
4149064 Method and apparatus for adjusting electrical networks consisting of synthetic foils Apr. 10, 1979
4105892 Thin resistor film type thermal head for printing on heat-sensitive paper Aug. 8, 1978
4061814 Method and masking structure for configurating thin layers Dec. 6, 1977
4007352 Thin film thermal print head Feb. 8, 1977

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