Inventor
J. Michael Sierakoski
Inventor
Tucson, AZ, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Gprimary
C01GCompounds containing metals not covered by subclasses c01d or c01f23%
C22BProduction and refining of metals23%
Y02PClimate change mitigation technologies in the production or processing of goods23%
C02FTreatment of water, waste water, sewage, or sludge8%
C07CAcyclic or carbocyclic compounds8%
C07GCompounds of unknown constitution8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
PatentTitleYear
6,197,214'Ammonium thiosulfate complex of gold or silver and an amine'20015,968,364'Process for the removal of toxic cyanide and heavy metal species from alkaline solutions'19995,939,034'Process for the recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions'19995,522,997'Process for the removal of toxic cyanide and heavy metal species from alkaline solutions'19964,563,256'Solvent extraction process for recovery of zinc'19864,544,532'Solvent extraction'19854,507,268'Solvent extraction'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2001Patents assigned to HENKEL CORP (6)· patent assignee history
1985–2001Based in Tucson, AZ, US· patent location history
1996Patents assigned to COGNIS INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HENKEL CORP | 6 | 1985–2001 |
| COGNIS INC | 1 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tucson, AZ, US | 7 | 1985–2001 |