Inventor · disambiguated record
Hao-Jan Chang
Also filed as: CHANG HAO · CHANG HAO J · CHANG HAO-JAN
8 granted patents·76 citations·filing 1979–2020
84Inventor score
Top patents by PatentIndex Score
8 records- 0180US4272328ABuffer overcoat for CO2 ion-selective electrodesEASTMAN KODAK CO·Filed 1979·Granted Jun 9, 1981·30 cites·18 claims
- 0279US12221552B2Water-soluble coatings for substrate surfacesMONOSOL LLC·Filed 2020·Granted Feb 11, 2025·1 cites·28 claims
- 0373US4448846ARadiation-cured magnetic media and process for making sameAMPEX·Filed 1981·Granted May 15, 1984·26 cites·11 claims
- 0465US6433964B1Method of making high density recording medium having a non-magnetic, metallic layer on a flexible substrateFiled 2000·Granted Aug 13, 2002·6 cites·8 claims
- 0565US4480025AWater reservoir layers in bleach-fix sheetsEASTMAN KODAK CO·Filed 1983·Granted Oct 30, 1984·11 cites·24 claims
- 0652US9827780B2Visible multiple codes systemCHANG HAO-JAN·Filed 2017·Granted Nov 28, 2017·0 cites·18 claims
- 0747US9794448B1Visible multiple codes system, method and apparatusCHANG HAO-JAN·Filed 2009·Granted Oct 17, 2017·0 cites·24 claims
- 0831US6144525AHigh density recording medium having a non-magnetic, metallic layer on a flexible substrateFiled 1997·Granted Nov 7, 2000·2 cites·10 claims
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