Inventor
Donald B. Stain
Inventor
Lakeland, FL, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
B01DSeparation13%
C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium13%
C05DInorganic fertilisers not covered by subclasses c05b, c05c13%
C01BNon-metallic elements7%
C01GCompounds containing metals not covered by subclasses c01d or c01f7%
C02FTreatment of water, waste water, sewage, or sludge7%
C22BProduction and refining of metals7%
Y02PClimate change mitigation technologies in the production or processing of goods7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
4,956,154'Selective removal of chromium, nickel, cobalt, copper and lead cations from aqueous effluent solutions'19904,885,148'Production of monobasic potassium phosphate with low chloride content from potassium chloride and phosphoric acid produced from the commercial wet process'19894,588,573'Method for the production of potassium sulfate using sulfuric acid and potassium chloride'19864,554,151'Process for producing K.sub.3 H(SO.sub.4).sub.2 crystals and potassium sulfate crystals'19854,439,405'Method for varying the mixing time and proportions in the contacting of substantially immiscible liquids'19844,404,173'Apparatus for contacting substantially immiscible liquids'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1984Patents assigned to UNC RECOVERY CORP (2)· patent assignee history
1983–1990Based in Lakeland, FL, US· patent location history
1985–1986Patents assigned to PRODECO INC (2)· patent assignee history
1989Patents assigned to PHOSPHATE ENGINEERING & CONSTR (1)· patent assignee history
1990Patents assigned to UNC RECLAMATION (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PRODECO INC | 2 | 1985–1986 |
| UNC RECOVERY CORP | 2 | 1983–1984 |
| PHOSPHATE ENGINEERING & CONSTR | 1 | 1989 |
| UNC RECLAMATION | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lakeland, Florida, US | 6 | 1983–1990 |