US Patent 9503499 Concealing latency in display of pages

Content logic in a web browser receives a request to load a web page in the web browser and determines whether a cached copy of the web page is available in a browser cache. If the cached copy is available, the content logic loads the cached copy of the web page in the web browser. While the cached copy of the web page is loaded, the content logic sends a request to a web server hosting the web page for updated content associated with the web page. If updated content is received from the web server, the content logic removes stale content from the cached copy of the web page and loads the updated content in the web browser.