Inventor · disambiguated record
David K. Hoffman
Also filed as: HOFFMAN DAVID · HOFFMAN DAVID K · HOFFMAN JR DAVID K
4 granted patents·2 pending applications·83 citations·filing 1974–2023
74Inventor score
Files withHOECHST CO AMERICAN2WEST VIRGINIA UNIV BOARD OF GOVERNORS ON BEHALF OF WEST VIRGINIA UNIV2UNIV IOWA STATE RES FOUND1UNIV WEST VIRGINIA1
Top patents by PatentIndex Score
6 records- 0190US4585788A6,11-dihydrodibenz[b,e]oxepin-acetic acids and derivativesHOECHST CO AMERICAN·Filed 1974·Granted Apr 29, 1986·23 cites·21 claims
- 0286US11827954B2Rare earth enrichment process by contacting raw material with a base at specific pH valuesWEST VIRGINIA UNIV BOARD OF GOVERNORS ON BEHALF OF WEST VIRGINIA UNIV·Filed 2022·Granted Nov 28, 2023·1 cites·26 claims
- 0385US5472577AFluid pumping system based on electrochemically-induced surface tension changesUNIV IOWA STATE RES FOUND·Filed 1994·Granted Dec 5, 1995·59 cites·30 claims
- 0469US2022340997A1Systems and processes for recovery of high-grade rare earth concentrate from acid mine drainageUNIV WEST VIRGINIA·Filed 2022·Application pending·0 cites
- 0563US2025369073A1Methods and compositions to recover rare earth elements from organic solutionsWEST VIRGINIA UNIV BOARD OF GOVERNORS ON BEHALF OF WEST VIRGINIA UNIV·Filed 2023·Application pending·0 cites
- 0633US4816591A6,11-dihydrodibenz[b,e]oxepin-acetic acids and derivativesHOECHST CO AMERICAN·Filed 1979·Granted Mar 28, 1989·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →