Inventor · Austin, TX, US

Keith E. Witek

32Patents
25h-index
20Co-inventors
77Inventor score

Filing activity: Sep 30, 1991 → Jan 26, 1999

Most-cited inventions

PatentTitleAreaCited byStatus
US5324683A Method of forming a semiconductor structure having an air region Emerging Cross-Sectional Technologies 505 Expired
US5554870A Integrated circuit having both vertical and horizontal devices and process for making the same Electricity 402 Expired
US5308782A Semiconductor memory device and method of formation Electricity 394 Expired
US5461488A Computerized facsimile (FAX) system and method of operation Electricity 174 Expired
US5510645A Semiconductor structure having an air region and method of forming the semiconductor structure Emerging Cross-Sectional Technologies 162 Expired
US6146970A Capped shallow trench isolation and method of formation Electricity 162 Expired
US6433382B1 Split-gate vertically oriented EEPROM device and process Electricity 150 Expired
US5879971A Trench random access memory cell and method of formation Electricity 123 Expired
US5398200A Vertically formed semiconductor random access memory device Emerging Cross-Sectional Technologies 120 Expired
US5612563A Vertically stacked vertical transistors used to form vertical logic gate structures Electricity 110 Expired
US5705409A Method for forming trench transistor structure Electricity 103 Expired
US6037202A Method for growing an epitaxial layer of material using a high temperature initial growth phase and a low temperature bulk growth phase Electricity 94 Expired
US5414289A Dynamic memory device having a vertical transistor Electricity 89 Expired
US5308778A Method of formation of transistor and logic gates Electricity 83 Expired
US5414288A Vertical transistor having an underlying gate electrode contact Electricity 81 Expired
US5627395A Vertical transistor structure Electricity 77 Expired
US5578850A Vertically oriented DRAM structure Electricity 65 Expired
US5712208A Methods of formation of semiconductor composite gate dielectric having multiple incorporated atomic dopants Emerging Cross-Sectional Technologies 63 Expired
US5340754A Method for forming a transistor having a dynamic connection between a substrate and a channel region Electricity 57 Expired
US5451538A Method for forming a vertically integrated dynamic memory cell Electricity 52 Expired
US5324673A Method of formation of vertical transistor Electricity 52 Expired
US5291438A Transistor and a capacitor used for forming a vertically stacked dynamic random access memory cell Electricity 51 Expired
US5949706A Static random access memory cell having a thin film transistor (TFT) pass gate connection to a bit line Emerging Cross-Sectional Technologies 43 Expired
US5158901A Field effect transistor having control and current electrodes positioned at a planar elevated surface and method of formation Emerging Cross-Sectional Technologies 36 Expired
US5252849A Transistor useful for further vertical integration and method of formation Electricity 26 Expired

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