AMERICAN MICROSYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03F AMPLIFIERS 281

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6356148 Systems and methods for enhancing charge transfer amplifier gainJul 18, 00Mar 12, 02[H03F]
6249181 Differential-mode charge transfer amplifierNov 30, 99Jun 19, 01[H03F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6294936 Spread-spectrum modulation methods and circuit for clock generator phase-locked loopExpiredSep 28, 98Sep 25, 01[H03D]
5669707 Christmas lamp socketExpiredMay 28, 96Sep 23, 97[F21V]
4517729 Method for fabricating MOS device with self-aligned contactsExpiredSep 22, 82May 21, 85[H01L]
4455568 Insulation process for integrated circuitsExpiredAug 27, 81Jun 19, 84[H01L]
4385286 Use of single reference voltage for analog to digital or digital to analog conversion of bipolar signalsExpiredJul 18, 80May 24, 83[H03K]
4384274 Current mirror digital to analog converterExpiredSep 02, 80May 17, 83[H03K]
4369564 VMOS Memory cell and method for making sameExpiredDec 22, 80Jan 25, 83[H01L]
4350975 Dual bandwidth autozero loop for a voice frequency CODECExpiredJul 18, 80Sep 21, 82[H03K]
4335355 CMOS Operational amplifier with reduced power dissipationExpiredFeb 13, 81Jun 15, 82[H03F]
4331894 Switched-capacitor interolation filterExpiredMay 29, 80May 25, 82[H03F, H03H]
4329599 Switched-capacitor cosine filterExpiredMay 29, 80May 11, 82[H03F, H03H]
4315223 CMOS Operational amplifier with improved frequency compensationExpiredSep 27, 79Feb 09, 82[H03F]
4306916 CMOS P-Well selective implant methodExpiredSep 20, 79Dec 22, 81[H01L, B01J]
4306197 Switched-capacitor elliptic filterExpiredDec 17, 79Dec 15, 81[H03F]
4284957 CMOS Operational amplifier with reduced power dissipationExpiredSep 28, 79Aug 18, 81[H03F]
4271418 VMOS Memory cell and method for making sameExpiredOct 29, 79Jun 02, 81[H01L]
4261772 Method for forming voltage-invariant capacitors for MOS type integrated circuit device utilizing oxidation and reflow techniquesExpiredJul 06, 79Apr 14, 81[H01L]
4229800 Round off correction logic for modified Booth's algorithmExpiredDec 06, 78Oct 21, 80[G06F]
4222062 VMOS Floating gate memory deviceExpiredMay 04, 76Sep 09, 80[H01L, G11C]
4222063 VMOS Floating gate memory with breakdown voltage lowering regionExpiredMay 30, 78Sep 09, 80[H01L, G11C]

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