How many patents does
Hebei Electric Power Research Institute have?
patents
316
families
260
granted
52
applications
264
CN
304
WO
10
US
2
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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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Hebei Electric Power Research Institute
Top ten assignees appearing on patents
2009 - 2018
2009
2018
Hebei Electric Power Research Institute
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method for calculating primary time constant of power grid | 5 | 2010 |
| global-positioning-system-based quantitative analysis and evaluation method for primary … 🛈 | 3 | 2012 |
| method for calculating loss reducing rate of newly built transformer station of electric… 🛈 | 3 | 2011 |
| method for inhibiting ammonia nitrogen corrosion of urban recycled water circular coolin… 🛈 | 3 | 2011 |
| method for testing transformer insulation combination | 2 | 2011 |
| insulating property isothermal relaxation current method microcurrent testing adapter fo… 🛈 | 2 | 2011 |
| testing method for delayed output time of signal control terminal of intelligent electri… 🛈 | 2 | 2011 |
| measurement method of parameters of ultrasonic arc surface oblique probe | 2 | 2009 |
| method for judging low-frequency oscillation of power grid based on pss output mutation | 2 | 2009 |
| ultrasonic detection method for oxide skin in pipe at heating surface of boiler | 2 | 2011 |