1. Patent Mining 
2. Data Mining Analysis 
2.1 Relative R&D Strength 
3. Vendors' Patent Deployment 
3.1 International Patent Assignees 
3.2 Overview of Major VR Patent Assignees 
3.2.1 Microsoft 
3.2.2 Immersion Corporation 
3.2.3 Sony 
3.2.4 Google 
3.2.5 Oculus VR 
MIC Perspective 
Vendors' Patent Portfolios Focus on Gaming Devices and Display Systems 
GUI Crucial to Product Differentiation; Prospective Vendors Can Develop Gesture-based Applications 
Appendix 
Glossary of Terms 
List of Companies 

Introduction of the patent mining procedure and distribution and relative R&D strength of 20 major VR companies

Identifying major assignees' VR patents in applications, selecting five leading vendors whose key technology fields and deployment in VR applications were analyzed
 

Figure 1: Major Vendors' VR Devices on the Market 

Table 1: Relative R&D Intensity of Top 20 VR Patent Assignees 
Table 2: VR Patents in Applications vs International Assignees 
Table 3: VR Patents in GUI vs International Assignees