Individual holder
ZHANG YUN H
CA·4 granted patents·109 citations·filing 1989–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0184US5070869AMen's underwear with supporting pocketZHANG YUN H·Filed 1989·Granted Dec 10, 1991·78 cites·3 claims
- 0247US5075010AGround water filter for obtaining drinking waterZHANG YUN H·Filed 1990·Granted Dec 24, 1991·15 cites·11 claims
- 0338US5126048AGround water filter for obtaining drinking waterZHANG YUN H·Filed 1991·Granted Jun 30, 1992·9 cites·6 claims
- 0433US5348378APressure balanced torsion system for a backrest and the likeZHANG YUN H·Filed 1992·Granted Sep 20, 1994·7 cites·9 claims
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