APEX MICROTECHNOLOGY, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H03F AMPLIFIERS 775
 
 
 
B41J TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS 196
 
 
 
H03G CONTROL OF AMPLIFICATION 150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9592665 Multiplexed multilevel converter amplifierJan 07, 16Mar 14, 17[H03H, B41J]
7786799 Trimming technique for high voltage amplifiers using floating low voltage structuresMar 21, 08Aug 31, 10[H03F]
7619476 Biasing stage for an amplifierMar 15, 06Nov 17, 09[H03F]
7339433 Differential amplifier stageMar 15, 06Mar 04, 08[H03F]
6496068 Multi-stage amplifier circuitNov 14, 00Dec 17, 02[H03F]
5519357 Biasing arrangement for a quasi-complementary output stageFeb 21, 95May 21, 96[H03F]
5365194 Power operational amplifier having oscillation limiter and method thereforJun 03, 93Nov 15, 94[H03G, H03F]
5210505 Apparatus and method for an input stage of an operational amplifierMar 10, 92May 11, 93[H03F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0129,024 INVERTED THROUGH CIRCUIT BOARD MOUNTING WITH HEAT SINKABANNov 15, 07May 21, 09[H05K]
7477088 Power supplies for driving h-bridgesExpiredNov 05, 07Jan 13, 09[H03K]
7292087 Power supplies for driving H-bridgesExpiredMar 15, 06Nov 06, 07[H03K]
5142243 Apparatus and method for an input stage of an operational amplifierExpiredDec 19, 90Aug 25, 92[H03F]
4871965 Environmental testing facility for electronic componentsExpiredAug 18, 88Oct 03, 89[G01R]
4833423 Apparatus and method for a wide-band direct-coupled transistor amplifierExpiredJul 20, 87May 23, 89[H03F]
4808909 Bias voltage and constant current supply circuitExpiredOct 15, 87Feb 28, 89[G05F]

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