Inventor
Charles W. Weston
Inventor
Prairieville, LA, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C01Bprimary
C01BNon-metallic elements29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
C05CNitrogenous fertilisers13%
C05GMixtures of fertilisers covered individually by different subclasses of class c0513%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals4%
C02FTreatment of water, waste water, sewage, or sludge4%
C05BPhosphatic fertilisers4%
C10JProduction of producer gas, water-gas, synthesis gas from solid carbonaceous material, or mixtures containing these gases4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
PatentTitleYear
5,364,438'Fluid urea-containing fertilizer'19945,352,265'Granular urea-based fertilizer'19945,236,679'Removal of aluminum contamination during production of phosphoric acid'19935,112,499'Process for treating pond water'19924,994,100'Homogeneous granular nitrogen fertilizer'19914,722,832'Sulfur recovery process'19884,704,136'Sulfate reduction process useful in coal gasification'19874,485,078'Process for producing wet process phosphoric acid from phosphate rocks containing fluochlorapatite and related minerals'19844,472,368'Neutralization of cooling pond water in phosphoric acid plants'19844,390,509'Process for manufacturing ammonium phosphate utilizing an oxalic acid acidulating process'19834,325,927'Purified monoammonium phosphate process'19824,063,920'Reducing settling rate of post-precipitate in fertilizer solution by chloride addition'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Patents assigned to MISSISSIPPI CHEM CORP (1)· patent assignee history
1977Based in Yazoo City, MS, US· patent location history
1982–1984Patents assigned to AGRICO CHEM CO (4)· patent assignee history
1982–1994Based in Prairieville, LA, US· patent location history
1983–1991Based in Prarieville, LA, US· patent location history
1987–1994Patents assigned to FREEPORT MCMORAN RESOURCE (7)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FREEPORT MCMORAN RESOURCE | 7 | 1987–1994 |
| AGRICO CHEM CO | 4 | 1982–1984 |
| MISSISSIPPI CHEM CORP | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Prairieville, LA, US | 9 | 1982–1994 |
| Prarieville, LA, US | 2 | 1983–1991 |
| Yazoo City, MS, US | 1 | 1977 |