Earth Sciences, Inc.
Records under this name other than patents Earth Sciences, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,269,952 | Methods and apparatus for use in processing and treating particulate material Formerly held Term ended Term ended Jun 11, 2019 · From the USPTO record | Term ended | Term ended Jun 11, 2019 | From the USPTO record |
| US 3,996,333 | Method for dehydrating ores Term ended Term ended no later than Dec 7, 1996 · Low confidence | Term ended | Term ended no later than Dec 7, 1996 | Low confidence |
| US 3,996,334 | Process for recovering aluminum from alunite Term ended Term ended no later than Dec 7, 1996 · Low confidence | Term ended | Term ended no later than Dec 7, 1996 | Low confidence |
| US 4,008,307 | Production of monobasic potassium phosphate by ion exchange Term ended Term ended no later than Feb 15, 1997 · Low confidence | Term ended | Term ended no later than Feb 15, 1997 | Low confidence |
| US 4,029,737 | Redox treatment of alunite ore Term ended Term ended no later than Jun 14, 1997 · Low confidence | Term ended | Term ended no later than Jun 14, 1997 | Low confidence |
| US 4,031,182 | Recovery of aluminum from alunite ore using acid leach to purify the residue for bayer leach Term ended Term ended no later than Jun 21, 1997 · Low confidence | Term ended | Term ended no later than Jun 21, 1997 | Low confidence |
| US 4,033,842 | Production of monobasic potassium phosphate by electrodialysis Term ended Term ended no later than Jul 5, 1997 · Low confidence | Term ended | Term ended no later than Jul 5, 1997 | Low confidence |
| US 4,057,611 | Process for recovering aluminum from alunite Term ended Term ended no later than Nov 8, 1997 · Low confidence | Term ended | Term ended no later than Nov 8, 1997 | Low confidence |
| US 4,075,068 | Process for the recovery of aluminum from alunite Term ended Term ended no later than Feb 21, 1998 · Low confidence | Term ended | Term ended no later than Feb 21, 1998 | Low confidence |
| US 4,093,700 | Process for reduction of alunite ore in aluminum recovery process Term ended Term ended no later than Jun 6, 1998 · Low confidence | Term ended | Term ended no later than Jun 6, 1998 | Low confidence |