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I'm pretty sure filament LED bulbs were invented in China - and patented by their Chinese inventors at the time too. The University of California seem to be sui

by makomk 7y ago

I'm pretty sure filament LED bulbs were invented in China - and patented by their Chinese inventors at the time too. The University of California seem to be suing using broad, trollish patents on things like omitting the rear reflector and allowing LED dies to emit light in all directions. Also, most of the patents were filed after LED filaments became widespread on the market using tricks with patent priority. (The other odd thing is that a lot of LED filaments don't do this - they have a rear reflective metal strip that forms the main structure of the filament.)

bdowling 7y ago
> tricks with patent priority. It's not a trick because in order to assert priority based on a prior application, the invention claimed needs to be completely supported by the prior disclosure. In fact, an applicant will often claim less than what they can in a first application, for a variety of reasons.