100 Years Lighting IP Applications
  These IP Snapshots show approximately 100 years of patent applications of the IPC class F21 lighting and the IPC class H05 electric techniques. Both IPC classes are the most relevant in the lighting domain. Annually, over 60,000 applications are filed globally and an increasing number of IP applications is predicted over the next few years. Lighting, in general, and the electronics are, therefore, quite similar in numbers.
  https://www.led-professional.com/resources-1/intellectual-properties/100-years-ip-application-trends-in-lighting
  https://www.led-professional.com/resources-1/intellectual-properties/100-years-ip-application-trends-in-lighting/@@images/image-1200-a42e1d863e827ae2dd6e5e863c231ba5.jpeg
  
    Resources | IP Snapshot | Technologies
      |
    
  
  Feb 16, 2018
                
                  100 Years Lighting IP Applications
                
                
                
                  These IP Snapshots show approximately 100 years of patent applications of the IPC class F21 lighting and the IPC class H05 electric techniques. Both IPC classes are the most relevant in the lighting domain. Annually, over 60,000 applications are filed globally and an increasing number of IP applications is predicted over the next few years. Lighting, in general, and the electronics are, therefore, quite similar in numbers.
                
                
              
              
              
                
      
        
           

IPC Class F21: Lighting
 

IPC Class H05: Electric Techniques Not Otherwise Provided For
 
(c) Luger Research e.U. - 2018