Convergence meter
Patent family with 3 members
Solar collector
Memoization
Patent family with 4 members
Patent family with 6 members
Patent family with 10 members
http://en.wikipedia.org/wiki/Natural_rubber; Patent family with 8 members
Patent family with 2 members
E.g. Aluminimum oxides etc.; Patent family with 10 members
http://en.wikipedia.org/wiki/Friction_welding; Patent family with 3 members
http://en.wikipedia.org/wiki/Undercut_(manufacturing)
E.g. http://en.wikipedia.org/wiki/Gaussian_process_emulator
http://en.wikipedia.org/wiki/Charge_controller
http://en.wikipedia.org/wiki/Dopant
electronic circuits
E.g. coal, copper etc.; patent family of 2 members
