How many patents does
Exfo have?
patents
286
families
73
granted
88
applications
198
US
135
EP
66
CN
39
WO
15
KR
2
JP
1
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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Exfo
Top ten assignees appearing on patents
2009 - 2018
| exfo | 244 |
| exfo electro-optical engineering | 20 |
| exfo electro optical eng | 4 |
| nethawk | 4 |
| esco corporation | 2 |
| ehksfo ehlektro-optikal inzhinirin… 🛈 | 1 |
2018
| exfo | 20 |
Exfo
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| multiple-acquisition otdr method and device | 17 | 2010 |
| method and apparatus for testing optical networks | 17 | 2003 |
| method and apparatus for deriving parameters of optical paths in optical networks using … 🛈 | 13 | 2008 |
| method and system for determining in-band optical noise | 12 | 2007 |
| reference-based in-band osnr measurement on polarization-multiplexed signals | 10 | 2010 |
| all-optical balanced detection system | 10 | 2008 |
| bi-directional multi-pulsewidth optical time-domain reflectometer | 8 | 2013 |
| testing network communications links | 8 | 2010 |
| pass-through test device | 8 | 2013 |
| in-band optical noise measurement using differential polarization response | 7 | 2009 |