Inventor

Michael J. Virnig

Inventor

Tucson, AZ, US

Overview

1978–2017

Patent span

Chemistry

Primary field (CPC C)

Patents· 71 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C22Bprimary

C22BProduction and refining of metals24%

Y02PClimate change mitigation technologies in the production or processing of goods24%

C07CAcyclic or carbocyclic compounds16%

C01GCompounds containing metals not covered by subclasses c01d or c01f8%

B09CReclamation of contaminated soil3%

C25CProcesses for the electrolytic production, recovery or refining of metals3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

B03BSeparating solid materials using liquids or using pneumatic tables or jigs2%

B09BDisposal of solid waste not otherwise provided for2%

C02FTreatment of water, waste water, sewage, or sludge2%

PatentTitleYear

9,714,218'Acid mist mitigation agents for electrolyte solutions'2017 9,074,292'Acid mist mitigation agents for electrolyte solutions'2015 8,986,633'Compositions and methods of using a ketoxime in a metal solvent extraction reagent'2015 8,945,490'Methods of metal extraction using oximes'2015 8,852,549'Method for maintaining the ratio of the oxime to equilibrium modifier concentration in solvent extraction circuits'2014 8,529,850'Compositions and methods of using a ketoxime in a metal solvent'2013 8,475,748'Metal solvent extraction reagents and use thereof'2013 8,460,623'Methods of metal extraction using oximes'2013 8,440,857'Sulfonate- or sulfate-capped anti-misting agents'2013 8,435,466'Methods of metal extraction from ammoniacal solutions using oximes'2013 8,343,326'Acid mist mitigation agents for electrolyte solutions'2013 7,993,613'More efficient ether modifiers for copper extractant formulations'2011 7,585,475'Highly-conductive copper extractant formulations'2009 7,025,899'Concentrated solutions of oxime metal extractants and method of formulating extractant compositions therefrom'2006 6,833,479'Antimisting agents'2004 6,702,872'Processes for the recovery of copper from aqueous solutions containing nitrate ions'2004 6,632,410'Solvent extraction process'2003 6,599,414'Solvent extraction processes for metal recovery'2003 6,596,053'Processes for the recovery of copper from aqueous solutions containing nitrate ions'2003 6,432,167'Processes for the recovery of copper from aqueous solutions containing nitrate ions'2002 6,432,166'Dust control'2002 6,395,062'Process for recovery of metals from metal-containing ores'2002 6,342,635'Ketoximes, processes therefor, and copper extraction process'2002 6,261,526'Nickel recovery process and compositions for use therein'2001 6,231,784'Water insoluble composition of an aldoxime extractant and an equilibrium modifier'2001 6,210,647'Process of recovery of metals from aqueous ammoniacal solutions employing an ammonia antagonist having only hydrogen bond acceptor properties'2001 6,197,214'Ammonium thiosulfate complex of gold or silver and an amine'2001 6,177,055'Process for extracting and recovering copper'2001 6,156,280'Process for removing manganese from organic solutions of oximes and nickel ore treatment process'2000 6,107,523'Beta-diketones for the extraction of copper from aqueous ammoniacal solutions'2000 6,060,029'Process for extraction of metals from aqueous ammoniacal solutions with beta-diketone extractants while maintaining a voltage potential to control entrainment of the aqueous layer into the organic layer'2000 5,993,757'Reoximation of metal extraction circuit organics'1999 5,976,218'Process for the recovery of nickel'1999 5,968,364'Process for the removal of toxic cyanide and heavy metal species from alkaline solutions'1999 5,939,034'Process for the recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions'1999 5,936,129'Process for making sterically-hindered .beta.-diketones'1999 5,908,605'Copper recovery process'1999 5,885,327'Process for the recovery of gold'1999 5,785,935'Process for removing mercury from soil'1998 5,744,107'Process for removing heavy metals from soil'1998 5,670,035'Method for recovering copper'1997 5,660,806'Process for removing lead from sandblasting wastes containing paint chips'1997 5,654,458'Recovery of palladium'1997 5,607,060'Method and apparatus for removing metal contamination from soil'1997 5,575,918'Method for recovery of polymers'1996 5,522,997'Process for the removal of toxic cyanide and heavy metal species from alkaline solutions'1996 5,494,649'Process for removing heavy metals from paint chips'1996 5,466,426'Method and apparatus for removing metal contamination from soil'1995 5,340,380'Recovery of precious metal'1994 5,198,021'Recovery of precious metal'1993 5,158,603'Process of extracting anions with quaternary amines'1992 5,032,323'Process for isomerizing epoxides to ketones'1991 5,028,259'Recovery of precious metal'1991 5,019,297'Process for isomerizing olefinically unsaturated secondary alcohols'1991 4,992,200'Recovery of precious metals'1991 4,992,416'Isomeric formyl trimethylbicyclo[2.2.2]oct-7-enes'1991 4,940,808'Process for ozonization of unsaturated organic compounds'1990 4,936,999'Process for recovery of amino acids from aqueous mixtures'1990 4,904,640'2-alkylidene-3,3,5(3,5,5)-trimethyl cyclopentanones'1990 4,895,597'Recovery of precious metals'1990 4,886,889'Process for recovery of an amino acid from aqueous mixtures thereof'1989 4,814,007'Recovery of precious metals'1989 4,647,688'Substituted fatty ethers'1987 4,639,540'Dicyanoethenyl fatty compounds and derivatives thereof'1987 4,638,096'Process of preparing hydroxyarylaldehydes and catalyst therefor'1987 4,626,582'Acryloxymethyl substituted fatty compounds'1986 4,612,403'Hydroformylation of olefinic compounds in the presence of a cobalt catalyst and an organic nitrile promoter'1986 4,294,965'Benzene sulfonamido pyrimidine derivatives'1981 4,210,759'Benzene sulfonamido pyridine derivatives'1980 4,209,419'Certain sulfonamidoquinolines, metal complexes thereof, and solutions containing such sulfonamidoquinolines and metal complexes'1980 4,100,163'Substituted 8-sulfonamidoquinolines'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1991Based in Fridley, MN, US· patent location history

1980–2002Patents assigned to HENKEL CORP (37)· patent assignee history

1980Based in Roseville, MN, US· patent location history

1990–1998Based in Santa Rosa, CA, US· patent location history

1997–2017Based in Tucson, AZ, US· patent location history

2002–2006Patents assigned to COGNIS CORP (9)· patent assignee history

2009–2015Patents assigned to COGNIS IP MAN GMBH (10)· patent assignee history

2013–2014Patents assigned to BENDER JACK (7)· patent assignee history

2013–2014Patents assigned to VIRNIG MICHAEL (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HENKEL CORP	37	1980–2002
COGNIS IP MAN GMBH	10	2009–2015
COGNIS CORP	9	2002–2006
BENDER JACK	7	2013–2014
VIRNIG MICHAELself	7	2013–2014

Locations

Location	Patents	Span
Tucson, AZ, US	40	1997–2017
Santa Rosa, California, US	17	1990–1998
Fridley, Minnesota, US	13	1978–1991
Roseville, Minnesota, US	1	1980