Individual holder
WU TSUN Z
TW·3 granted patents·32 citations·filing 1982–1982
Individually held — no corporate assignee on record.
Technology mixA45B3
Top patents by PatentIndex Score
3 records- 0152US4420007AComponent framework structure for the frame of a foldable umbrellaWU TSUN Z·Filed 1982·Granted Dec 13, 1983·15 cites·8 claims
- 0245US4418707ALocking device of an automatic opening umbrellaWU TSUN Z·Filed 1982·Granted Dec 6, 1983·10 cites·8 claims
- 0340US4422467ACoupling structure of the upper notch and ferrule on an umbrella or parasolWU TSUN Z·Filed 1982·Granted Dec 27, 1983·7 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →