No; Twitter notably has not filed for any patents.
There are tens of thousands of patents on the airplane and all parts of it.
No, patents cannot be obtained for any naturally occurring substance.
He is dead and doesn't own any property, let alone patents.
none
chickfila
Either they have licenses for any necessary patents, their valves do not infringe any of those patents (utility or design), or the owners of those patents don't care enough to find infringers and challenge the unauthorized use.
Probably not. While the president has some knowledge of patent law (he is a former attorney), there is no evidence that he has invented anything, nor have we seen any reports that he holds any patents himself.
I believe you can start working there at 14.
You can search for information on patents by simply usng the Google patent search at www.google.com/patents.
California historically files for more patents than any other state; in 2010, California applied for nearly four times as many patents as its closest competitors, New York and Texas.
99,220, including utility patents, plant patents, design patents, and reissues.