DC

David Chao

IN Ingeniospec: 41 patents #1 of 5Top 20%
CO Contour Optik: 29 patents #1 of 15Top 7%
VE Vesture: 17 patents #9 of 204Top 5%
IV Ip Venture: 4 patents #4 of 12Top 35%
📍 Saratoga, CA: #52 of 2,933 inventorsTop 2%
🗺 California: #1,696 of 386,348 inventorsTop 1%
Overall (All Time): #10,807 of 4,157,543Top 1%
115
Patents All Time

Issued Patents All Time

Showing 101–115 of 115 patents

Patent #TitleCo-InventorsDate
6092896 Eye-wear with magnets Richard Chao 2000-07-25
6012811 Eyeglass frames with magnets at bridges for attachment Richard Chao 2000-01-11
5929964 Auxiliary frame securing mechanism 1999-07-27
5883689 Auxiliary frames with clamping members including resilient mechanisms 1999-03-16
5882101 Auxiliary frames with ears and lateral projections 1999-03-16
5883688 Eyeglass frames with arms and flaps 1999-03-16
5877838 Eyeglass appliance having clamping members 1999-03-02
5815899 Method for making a spectacle frame 1998-10-06
5805259 Rimless eyeglasses having adjustable legs 1998-09-08
5786880 Method for forming a spectacle frame having a magnet member 1998-07-28
5689835 Sports goggles having an attachable nose pad 1997-11-25
5651146 Sports goggles having shock absorbing mechanism 1997-07-29
5631716 Sports goggles having prescription lens 1997-05-20
5631719 Spectacle frame having resilient coupling 1997-05-20
5583588 Spectacle frame having rotary members 1996-12-10