Very happy to report that another highly trusted antibody manufacturer, BioLegend, has joined the Resource Identification Initative.
Please take a look at any antibody page at Biolegend to see the RRID reflected for each product.
Great example page: http://www.biolegend.com/alexa-fluor-488-anti-gfap-antibody-12130.html
http://www.businesswire.com/news/home/20160923005060/en/BioLegend-Joins-Resource-Identification-Initiative-Improve-Research