Individual holder
ZIEVERS JAMES F
US·6 granted patents·107 citations·filing 1989–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
6 records- 0166US5223138AReinforced ceramic filter candle and method of making sameZIEVERS JAMES F·Filed 1991·Granted Jun 29, 1993·29 cites·5 claims
- 0259US5209844AHot gas filter with jet pulse cleaningZIEVERS JAMES F·Filed 1991·Granted May 11, 1993·24 cites·10 claims
- 0353US5238478ACeramic filter element and method of manufactureZIEVERS JAMES F·Filed 1992·Granted Aug 24, 1993·18 cites·8 claims
- 0449US5256175AHot gas filterZIEVERS JAMES F·Filed 1992·Granted Oct 26, 1993·16 cites·13 claims
- 0546US5152815AType 114 tiered filterZIEVERS JAMES F·Filed 1989·Granted Oct 6, 1992·12 cites·6 claims
- 0639US5125277AGas sampling apparatusZIEVERS JAMES F·Filed 1991·Granted Jun 30, 1992·8 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →