How many patents does
Keithley Instruments have?
patents
246
families
79
granted
77
applications
169
US
100
CN
37
EP
36
JP
33
KR
12
RoW
28
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The report contains ten-year analysis with the following sections
- patent filing analysis
- worldwide filing analysis
- patent family analysis
- application analysis
- granted analysis
- classification analysis
- citation analysis
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Keithley Instruments
Top ten assignees appearing on patents
2009 - 2018
| keithley instruments | 209 |
| tektronix | 2 |
2009
| keithley instruments | 20 |
2018
| keithley instruments | 12 |
Keithley Instruments
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| smu rf transistor stability arrangement | 12 | 2013 |
| active shunt ammeter apparatus and method | 10 | 2012 |
| low frequency impedance measurement with source measure units | 9 | 2011 |
| guarded printed circuit board islands | 9 | 2013 |
| dc-ac probe card topology | 9 | 2011 |
| digital voltmeter topology | 9 | 2013 |
| impedance source ranging apparatus and method | 8 | 2012 |
| soft current switching power supply | 8 | 2015 |
| isolation transformer for use in isolated dc-to-dc switching power supply | 7 | 2013 |
| magnetization balancing method | 7 | 2014 |