Inventor · disambiguated record
San-Tong Day
Also filed as: DAY SAN-TONG
3 granted patents·81 citations·filing 1984–1987
74Inventor score
Technology areasA45B
Files withDAY SAN TONG3
Top patents by PatentIndex Score
3 records- 0161US4548222AFull-automatic umbrellaDAY SAN TONG·Filed 1984·Granted Oct 22, 1985·29 cites·4 claims
- 0257US4534374AFully automatic single push button type umbrellaDAY SAN TONG·Filed 1984·Granted Aug 13, 1985·24 cites·4 claims
- 0355US4823821AAutomatic single push button type umbrellaDAY SAN TONG·Filed 1987·Granted Apr 25, 1989·28 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →