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Class Information
Number: 257/E21.544
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of devices consisting of plurality of solid-state components formed in or on common substrate or of parts thereof; manufacture of integrated circuit devices or of parts thereof (epo) > Manufacture of specific parts of devices (epo) > Making of isolation regions between components (epo) > Pn junction isolation (epo)
Description: This subclass is indented under subclass E21.54. This subclass is substantially the same in scope as ECLA classification H01L21/761.










Patents under this class:
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Patent Number Title Of Patent Date Issued
4177095 Process for fabricating an integrated circuit subsurface zener diode utilizing conventional processing steps Dec. 4, 1979
4168997 Method for making integrated circuit transistors with isolation and substrate connected collectors utilizing simultaneous outdiffusion to convert an epitaxial layer Sep. 25, 1979
4161742 Semiconductor devices with matched resistor portions Jul. 17, 1979
4160990 Semiconductor devices and circuit arrangements including such devices Jul. 10, 1979
4145905 Method and apparatus for controlling bow in venetian blind slats Mar. 27, 1979
4146905 Semiconductor device having complementary transistor structures and method of manufacturing same Mar. 27, 1979
4145621 Transistor logic circuits Mar. 20, 1979
4144098 P.sup.+ Buried layer for I.sup.2 L isolation by ion implantation Mar. 13, 1979
4138614 JFET switch circuit Feb. 6, 1979
4136435 Method for making solid-state device Jan. 30, 1979
4135291 Method for producing semiconductor devices with high reverse blocking capability Jan. 23, 1979
4134124 Semiconductor devices and circuit arrangements including such devices Jan. 9, 1979
4132573 Method of manufacturing a monolithic integrated circuit utilizing epitaxial deposition and simultaneous outdiffusion Jan. 2, 1979
4127900 Reading capacitor memories with a variable voltage ramp Nov. 28, 1978
4127859 Integrated circuit subsurface zener diode Nov. 28, 1978
4125853 Integrated circuit transistor Nov. 14, 1978
4122481 Semiconductor IC structure including isolated devices in a single substrate and method for fabricating same Oct. 24, 1978
4117507 Diode formed in integrated-circuit structure Sep. 26, 1978
4113512 Technique for preventing forward biased epi-isolation degradation Sep. 12, 1978
4111726 Bipolar integrated circuit process by separately forming active and inactive base regions Sep. 5, 1978
4108685 Semiconductor device manufacture Aug. 22, 1978
4104786 Method of manufacture of a semiconductor device Aug. 8, 1978
4095252 Composite JFET-bipolar transistor structure Jun. 13, 1978
4092185 Method of manufacturing silicon integrated circuits utilizing selectively doped oxides May. 30, 1978
4092662 Sensistor apparatus May. 30, 1978
4092548 Substrate bias modulation to improve mosfet circuit performance May. 30, 1978
4089021 Semiconductor device capable of withstanding high voltage and method of manufacturing same May. 9, 1978
4085417 JFET switch circuit and structure Apr. 18, 1978
4075043 Liquid phase epitaxy method of growing a junction between two semiconductive materials utilizing an interrupted growth technique Feb. 21, 1978
4074293 High voltage PN junction and semiconductive devices employing same Feb. 14, 1978
4068255 Mesa-type high voltage switching integrated circuit Jan. 10, 1978
4063966 Method for forming spaced electrically isolated regions in a body of semiconductor material Dec. 20, 1977
4063272 Semiconductor device and method of manufacture thereof Dec. 13, 1977
4056413 Etching method for flattening a silicon substrate utilizing an anisotropic alkali etchant Nov. 1, 1977
4046605 Method of electrically isolating individual semiconductor circuits in a wafer Sep. 6, 1977
4044373 IGFET with gate protection diode and antiparasitic isolation means Aug. 23, 1977
4040878 Semiconductor device manufacture Aug. 9, 1977
4040868 Semiconductor device manufacture Aug. 9, 1977
4038680 Semiconductor integrated circuit device Jul. 26, 1977
4033026 High density/high speed MOS process and device Jul. 5, 1977
4032372 Epitaxial outdiffusion technique for integrated bipolar and field effect transistors Jun. 28, 1977
4031607 Minority carrier isolation barriers for semiconductor devices Jun. 28, 1977
4021270 Double master mask process for integrated circuit manufacture May. 3, 1977
4006040 Semiconductor device manufacture Feb. 1, 1977
4001866 Monolithic, junction isolated photrac Jan. 4, 1977
4001048 Method of making metal oxide semiconductor structures using ion implantation Jan. 4, 1977
4001860 Double diffused metal oxide semiconductor structure with isolated source and drain and method Jan. 4, 1977
4001050 Method of fabricating an isolated p-n junction Jan. 4, 1977
3998662 Migration of fine lines for bodies of semiconductor materials having a (100) planar orientation of a major surface Dec. 21, 1976
3999215 Integrated semiconductor device comprising multi-layer circuit element and short-circuit means Dec. 21, 1976

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