Assignee

SPRATT RAY STEVEN

US·2 granted patents·30 citations·filing 2010–2010

Technology mixA61B1 B29D1 G02C1

Top patents by PatentIndex Score

2 records

0188US8297751B2Multi-focal lenses with segmented boundariesSPRATT RAY STEVEN·Filed 2010·Granted Oct 30, 2012·28 cites·20 claims
0262US8226238B2Method and apparatus for subjective refractionSPRATT RAY STEVEN·Filed 2010·Granted Jul 24, 2012·2 cites·21 claims

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