Inventor · disambiguated record
Robert A. Hard
Also filed as: HARD ROBERT · HARD ROBERT A · HARD ROBERT AMOS
28 granted patents·3 pending applications·904 citations·filing 1974–2004
97Inventor score
Top patents by PatentIndex Score
31 records- 0198US4960471AControlling the oxygen content in tantalum materialCABOT CORP·Filed 1989·Granted Oct 2, 1990·68 cites·8 claims
- 0297US4722756AMethod for deoxidizing tantalum materialCABOT CORP·Filed 1987·Granted Feb 2, 1988·181 cites·7 claims
- 0394US6268054B1Dispersible, metal oxide-coated, barium titanate materialsCABOT CORP·Filed 1997·Granted Jul 31, 2001·113 cites·73 claims
- 0492US4390365AProcess for making titanium metal from titanium oreOCCIDENTAL RES CORP·Filed 1980·Granted Jun 28, 1983·59 cites·34 claims
- 0588US4602820ARecovering metal values from geothermal brineHARD ROBERT A·Filed 1984·Granted Jul 29, 1986·34 cites·12 claims
- 0687US4351813AProcess for producing phosphorus pentoxide or phosphorus or phosphoric acidOCCIDENTAL RES CORP·Filed 1981·Granted Sep 28, 1982·34 cites·13 claims
- 0785US7282187B1Recovery of metal valuesCABOT CORP·Filed 1996·Granted Oct 16, 2007·43 cites·13 claims
- 0885US4359449AProcess for making titanium oxide from titanium oreOCCIDENTAL RES CORP·Filed 1980·Granted Nov 16, 1982·26 cites·7 claims
- 0985US4351809AProcess for reducing phosphate oreOCCIDENTAL RES CORP·Filed 1981·Granted Sep 28, 1982·31 cites·20 claims
- 1084US4389384AProcess for reducing phosphate oreOCCIDENTAL RES CORP·Filed 1982·Granted Jun 21, 1983·29 cites·11 claims
- 1176US4360234AIn-situ method and apparatus for sparging gas bubblesKENNECOTT COPPER CORP·Filed 1976·Granted Nov 23, 1982·33 cites·9 claims
- 1272US4470847AProcess for making titanium, zirconium and hafnium-based metal particles for powder metallurgyOCCIDENTAL RES CORP·Filed 1982·Granted Sep 11, 1984·25 cites·28 claims
- 1371US5437848ARecovery of metal values from process residuesCABOT CORP·Filed 1992·Granted Aug 1, 1995·24 cites·24 claims
- 1471US4595413AGroup IVb transition metal based metal and processes for the production thereofOCCIDENTAL RES CORP·Filed 1984·Granted Jun 17, 1986·16 cites·70 claims
- 1571US4397826AMethod of producing phosphorus pentoxide in a kiln with reduced carbon burnoutOCCIDENTAL RES CORP·Filed 1982·Granted Aug 9, 1983·20 cites·13 claims
- 1671US4116488AIn-situ mining method and apparatusKENNECOTT COPPER CORP·Filed 1976·Granted Sep 26, 1978·35 cites·98 claims
- 1768US5011742AArticle for controlling the oxygen content in tantalum materialFIFE JAMES A·Filed 1990·Granted Apr 30, 1991·25 cites·13 claims
- 1864US6843970B1Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agentCABOT CORP·Filed 1996·Granted Jan 18, 2005·18 cites·16 claims
- 1963US4655825AMetal powder and sponge and processes for the production thereofOCCIDENTAL RES CORP·Filed 1984·Granted Apr 7, 1987·15 cites·52 claims
- 2061US4045084AIn-situ mining of copper and nickelKENNECOTT COPPER CORP·Filed 1976·Granted Aug 30, 1977·23 cites·11 claims
- 2156US6979429B2Method for solubilizing metal valuesCABOT CORP·Filed 2002·Granted Dec 27, 2005·2 cites·13 claims
- 2252US4171146ARecovery of shale oil and magnesia from oil shaleOCCIDENTAL RES CORP·Filed 1978·Granted Oct 16, 1979·16 cites·71 claims
- 2350US4298437AMethod for producing magnesium metal from molten saltOCCIDENTAL RES CORP·Filed 1980·Granted Nov 3, 1981·8 cites·18 claims
- 2447US4241951ARecovery of magnesia from oil shaleOCCIDENTAL RES CORP·Filed 1979·Granted Dec 30, 1980·5 cites·42 claims
- 2546US7417174B2Resorbable laminated repair film and method of using sameUNIV NEW YORK STATE RES FOUND·Filed 2004·Granted Aug 26, 2008·0 cites·25 claims
- 2645US6800259B2Methods to control H2S and arsine emissionsCABOT CORP·Filed 2002·Granted Oct 5, 2004·0 cites·21 claims
- 2744US2003231984A1Method to rapidly prepare and screen formulations and compositions containing sameFiled 2003·Application pending·0 cites
- 2842US2001046603A1Dispersible, metal oxide-coated, barium titanate materialsFiled 2001·Application pending·0 cites
- 2941US2001048969A1Dispersible, metal oxide-coated, barium titanate materialsFiled 2001·Application pending·0 cites
- 3038US4291920AIn situ exploitation of deep set porphyry oresKENNECOTT CORP·Filed 1980·Granted Sep 29, 1981·12 cites·6 claims
- 3137US3951458AMethod of explosive fracturing of a formation at depthKENNECOTT COPPER CORP·Filed 1974·Granted Apr 20, 1976·9 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →