Blasters?

[GiMpY-wAnNaBe]

1) Blasters - 2060 or more because it would take a lot of research and development to concentrate a group of particles to the point where they can hurt someone
2) Transporters - in the vicinity of 2030 becuase if you think about the theory of it, its not really that complicated, all you do is record the matter in a specific area and then send that digital data to another location where that matter is recreated, the only barrier is recreating the matter from the recorded data, either that or simply moving each particle one by one at a very highspeed and then recompiling them at the destination
3) never....simply because you cannot stop a ray of light
4) 240 or sooner because once you figure out how to make a hologram odds are that by that time an interactive algorythm would have been created. Add forcefields and you have a hologram you can touch, as for the portable transmitter the Doctor has in Voyager, i don't think thats possible