WD

Willem P. C. Duyvesteyn

BI Bhp Minerals International: 14 patents #1 of 22Top 5%
MC Marathon Oil Canada: 13 patents #1 of 9Top 15%
SM Scandium International Mining: 11 patents #1 of 2Top 50%
AM Amax: 7 patents #11 of 180Top 7%
AN Altair Nanomaterials: 3 patents #4 of 9Top 45%
Shell Oil Compny: 2 patents #1,477 of 4,423Top 35%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Reno, NV: #32 of 2,043 inventorsTop 2%
🗺 Nevada: #105 of 8,397 inventorsTop 2%
Overall (All Time): #38,879 of 4,157,543Top 1%
60
Patents All Time

Issued Patents All Time

Showing 1–25 of 60 patents

Patent #TitleCo-InventorsDate
12338509 Byproduct scandium recovery from low grade primary metal oxide ores 2025-06-24
11821057 Recovery of critical metals from SX-EW copper raffinate and other solutions derived from leaching ores with sulfuric acid 2023-11-21
11732326 Extraction of lithium from mudstone and sequestration of carbon dioxide 2023-08-22
11691888 Process for the preparation of high purity alumina 2023-07-04
11673812 Countercurrent process for recovering high purity copper sulfate values from low grade ores 2023-06-13
11471984 Control of recrystallization in cold-rolled AlMn(Mg)ScZr sheets for brazing applications 2022-10-18
11142809 Systems and processes for recovering scandium values from laterite ores 2021-10-12
10988828 Extraction of scandium values from copper leach solutions 2021-04-27
10450634 Scandium-containing master alloys and method for making the same 2019-10-22
10378085 Recovery of scandium values through selective precipitation of hematite and basic iron sulfates from acid leachates 2019-08-13
10260127 Method for recovering scandium values from leach solutions 2019-04-16
9982325 Systems and methodologies for direct acid leaching of scandium-bearing ores 2018-05-29
9982326 Solvent extraction of scandium from leach solutions 2018-05-29
8877044 Methods for extracting bitumen from bituminous material Mahendra Joshi, Julian Kift, Dominic J. Zelnik, Whip C. Thompson, Cherish M. Hoffman 2014-11-04
8864982 Methods for obtaining bitumen from bituminous materials Julian Kift, Cherish M. Hoffman, Whip C. Thompson 2014-10-21
8679325 Processing asphaltene-containing tailings Julian Kift, Raymond L. Morley 2014-03-25
8663462 Methods for obtaining bitumen from bituminous materials 2014-03-04
8658029 Dry, stackable tailings and methods for producing the same Julian Kift 2014-02-25
8529687 Oxidation of asphaltenes Raymond L. Morley 2013-09-10
8449763 Nozzle reactor and method of use 2013-05-28
8435402 Nozzle reactor and method of use Jose Armando Salazar 2013-05-07
8372367 System and method for recovering boron values from plant tailings 2013-02-12
8354067 Processing asphaltene-containing tailings Julian Kift, Raymond L. Morley 2013-01-15
8257580 Dry, stackable tailings and methods for producing the same Julian Kift 2012-09-04
8101067 Methods for obtaining bitumen from bituminous materials Julian Kift 2012-01-24