Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 438/921
Name: Semiconductor device manufacturing: process > Doping > Nonselective diffusion
Description: Art collection under 914 involving a random diffusion process (i.e., diffusion without a mask).

Patents under this class:

Patent Number Title Of Patent Date Issued
5571747 Method for producing a semiconductor commutator Nov. 5, 1996
5569611 Method of manufacturing a bipolar transistor operating at low temperature Oct. 29, 1996
4843034 Fabrication of interlayer conductive paths in integrated circuits Jun. 27, 1989
4168997 Method for making integrated circuit transistors with isolation and substrate connected collectors utilizing simultaneous outdiffusion to convert an epitaxial layer Sep. 25, 1979
4140559 Method of fabricating an improved substrate fed logic utilizing graded epitaxial deposition Feb. 20, 1979

  Recently Added Patents
Resuming piecewise calibration of a real-time-clock unit after a measured offset that begins at the next calibration period
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Optical switching device and communications system
Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques
Electronic devices with voice command and contextual data processing capabilities
Automatic baroreflex modulation responsive to adverse event
Segmentation of a product markup image based on color and color differences
  Randomly Featured Patents
Selectively removing unwanted magnetic toner from magnetic member to provide uniform high resolution image
Apparatus and method for preventing disconnection of consumer premises equipment
Energy efficient scuttle cover kits
Distinction device of fuel in use for internal combustion engine
Transmission electron microscope sample holder with optical features
Pneumatic acutated switch
MEMS substrates, devices, and methods of manufacture thereof
Focal plane detecting device
Suturing assembly and method of use
Manufacturing method of forming two-domain liquid crystal display by exposing a part of orientation layer twice