Inventor
Piyan RAHMADI
Inventor
ID
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Bprimary
C22BProduction and refining of metals32%
Y02PClimate change mitigation technologies in the production or processing of goods29%
C01GCompounds containing metals not covered by subclasses c01d or c01f9%
B01DSeparation6%
B02CCrushing, pulverising, or disintegrating in general3%
B03BSeparating solid materials using liquids or using pneumatic tables or jigs3%
C01BNon-metallic elements3%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals3%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds3%
C02FTreatment of water, waste water, sewage, or sludge3%
PatentTitleYear
12,595,532Ore hydrometallurgical slag and phosphating slag202612,590,014Method for improving particle size and morphology of neutralizer for laterite nickel ore hydrometallurgy202612,473,611Dynamic optimization method for acid-to-ore ratio in high-pressure leaching of laterite nickel ore202512,403,413Method for green and low-cost extraction of nickel-cobalt from laterite nickel ore202512,384,709Wastewater treatment process in production of nickel cobalt hydroxide202512,378,637Treatment system for the slag phase after removing iron-aluminum-chromium from leaching solution of laterite nickel ore202512,378,630Combined heat exchange system of flash tank and preheater for laterite nickel ore leaching202512,362,043System for optimizing duration time of high-pressure leaching of laterite nickel ore202512,325,895Method for dynamically controlling high-pressure leaching reaction condition of laterite nickel ore202512,325,896Treatment method and application for laterite nickel ore leaching solution with high calcium and magnesium content202512,286,360Cobalt-manganese sulfate solution from low nickel matte2025Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2025–2026Patents assigned to GEM CO LTD (11)· patent assignee history
2025–2026Patents assigned to PT ESG NEW ENERGY MAT (11)· patent assignee history
2025–2026Patents assigned to PT GEM INDONESIA NEW ENERGY MAT (11)· patent assignee history
2025–2026Patents assigned to PT QMB NEW ENERGY MAT (11)· patent assignee history
2025–2026Based in ID· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEM CO LTD | 11 | 2025–2026 |
| PT ESG NEW ENERGY MAT | 11 | 2025–2026 |
| PT GEM INDONESIA NEW ENERGY MAT | 11 | 2025–2026 |
| PT QMB NEW ENERGY MAT | 11 | 2025–2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| ID | 11 | 2025–2026 |