KEITHLEY INSTRUMENTS, INC.
Patent Owner
Stats
- 79 US PATENTS IN FORCE
- 2 US APPLICATIONS PENDING
- Mar 01, 2018 most recent publication
Details
- 79 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,434 Total Citation Count
- Feb 28, 1983 Earliest Filing
- 22 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
Publication #
Title
Filing Date
Pub Date
Intl Class
2018/0059,157 LOW FREQUENCY IMPEDANCE MEASUREMENT WITH SOURCE MEASURE UNITSOct 21, 17Mar 01, 18[G01R]
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
9478351 Isolation transformer for use in isolated DC-to-DC switching power supplyMay 24, 13Oct 25, 16[H01F]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7853425 Parallel testing in a per-pin hardware architecture platformExpiredJul 11, 08Dec 14, 10[G06F, G01R]
7280929 Method and apparatus for pulse I-V semiconductor measurementsExpiredSep 29, 04Oct 09, 07[G01R]
6900649 High frequency RF interconnect for semiconductor automatic test equipmentExpiredSep 23, 03May 31, 05[G01R]
6262670 Source measure unit having secondary feedback for eliminating transients during range changingExpiredApr 10, 98Jul 17, 01[G08B]
5918194 Integrated modular measurement system having configurable firmware architecture and modular mechanical partsExpiredAug 01, 97Jun 29, 99[G01R]
5039934 Control for voltage/current source with current/voltage limitingExpiredMay 22, 90Aug 13, 91[G05F]
Top Inventors for This Owner
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