Inventor · disambiguated record
Charles D. Dern
Also filed as: DERN CHARLES D
5 granted patents·1 pending application·84 citations·filing 1993–2020
79Inventor score
Top patents by PatentIndex Score
6 records- 0194US11181320B2Energy recovery in a freeze-drying systemSP IND INC·Filed 2020·Granted Nov 23, 2021·4 cites·8 claims
- 0294US10113797B2Energy recovery in a freeze-drying systemSP IND INC·Filed 2016·Granted Oct 30, 2018·23 cites·18 claims
- 0391US10782070B2Energy recovery in a freeze-drying systemSP IND INC·Filed 2018·Granted Sep 22, 2020·4 cites·23 claims
- 0482US5330157ARotary disk valveHULL CORP·Filed 1993·Granted Jul 19, 1994·53 cites·6 claims
- 0554US10976104B2Means and methods for selective shelf temperature controlSP IND INC·Filed 2019·Granted Apr 13, 2021·0 cites·15 claims
- 0636US2018071415A1Repeated sterile use of a gauge in a steam sterilizable freeze-drying systemSP IND INC·Filed 2016·Application pending·0 cites
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