Assignee
HOOGLAND JAN
US·5 granted patents·2 pending applications·196 citations·filing 1981–2020
Top patents by PatentIndex Score
7 records- 0188US4575195AFlat field lensesHOOGLAND JAN·Filed 1983·Granted Mar 11, 1986·59 cites·1 claims
- 0285US4993817AEndoscope relay opticsHOOGLAND JAN·Filed 1988·Granted Feb 19, 1991·54 cites·19 claims
- 0382US4545652AFlat field lensesHOOGLAND JAN·Filed 1981·Granted Oct 8, 1985·41 cites·34 claims
- 0479US4946267AEndoscope relay opticsHOOGLAND JAN·Filed 1988·Granted Aug 7, 1990·41 cites·9 claims
- 0571US10537241B1Subjective optometer for home useHOOGLAND JAN·Filed 2018·Granted Jan 21, 2020·1 cites·9 claims
- 0649US2021015356A1Optometer for Home UseHOOGLAND JAN·Filed 2020·Application pending·0 cites
- 0747US2020073146A1Generic Reading Glasses with Convergence AssistanceHOOGLAND JAN·Filed 2018·Application pending·0 cites
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