Individual holder
CHANG ALEXANDER C
US·2 granted patents·4 pending applications·8 citations·filing 2004–2023
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0180US10646675B2Oxygen masksCHANG ALEXANDER C·Filed 2015·Granted May 12, 2020·7 cites·6 claims
- 0274US11679218B2Oxygen masksCHANG ALEXANDER C·Filed 2020·Granted Jun 20, 2023·1 cites·12 claims
- 0367US2023347087A1Oxygen masksCHANG ALEXANDER C·Filed 2023·Application pending·0 cites
- 0461US2023256185A1Oxygen masksCHANG ALEXANDER C·Filed 2023·Application pending·0 cites
- 0540US2019038863A1Oxygen masksCHANG ALEXANDER C·Filed 2016·Application pending·0 cites
- 0636US2007142722A1Egg monitoring methods and apparatusCHANG ALEXANDER C·Filed 2004·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →