DS

David So

UN Unknown: 2 patents #12,644 of 83,584Top 20%
Overall (All Time): #195,718 of 4,157,543Top 5%
22
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10282784 Global investment grade for natural and synthetic gems used in financial investments and commercial trading and method of creating standardized baskets of gems to be used in financial and commerical products Victor Feldman, Sharon Karsten, Daniel Gramza, Andrew Feldman 2019-05-07
8706513 Global investment grade for natural and synthetic gems used in financial investments and commercial trading and method of creating standardized baskets of gems to be used in financial and commercial products Victor Feldman, Sharon Karsten, Daniel Gramza, Andrew Feldman 2014-04-22
8239211 Global investment grade for natural and synthetic gems used in financial investments and commercial trading and method of creating standardized baskets of gems to be used in financial and commercial products Victor Feldman, Sharon Karsten, Daniel Gramza, Andrew Feldman 2012-08-07
D633817 Precious stone cut of a bottom portion with six chevrons 2011-03-08
D633818 Precious stone cut of a bottom portion with seven chevrons 2011-03-08
D633408 Precious stone cut of a bottom portion with eight chevrons 2011-03-01
D624844 Precious stone cut of a bottom portion with five chevrons 2010-10-05
D616328 Precious stone cut for the crown portion of the precious stone having 29 facets 2010-05-25
D611379 Precious stone cut large corner crown design having 41 facets 2010-03-09
D611380 Precious stone cut large split corner crown design having 45 facets 2010-03-09
D611381 Precious stone cut large corner crown design having 49 facets 2010-03-09
D610941 Precious stone cut crown design having 53 facets 2010-03-02
D610939 Precious stone cut for the crown portion of the precious stone having 45 facets 2010-03-02
D610938 Precious stone cut for the crown portion of the precious stone having 37 facets 2010-03-02
D610942 Precious stone cut short corners crown design having 41 facets 2010-03-02
D610943 Precious stone cut short corners crown design having 45 facets 2010-03-02
D555032 Precious stone cut 2007-11-13
D550584 Stone cut 2007-09-11
D534831 Stone cut 2007-01-09
D522400 Stone cut 2006-06-06
D521896 Stone cut 2006-05-30
D503354 Precious stone cut 2005-03-29